diff --git a/.flake8 b/.flake8
index d5712859..1d7308c8 100644
--- a/.flake8
+++ b/.flake8
@@ -4,8 +4,9 @@ per-file-ignores =
     # F401:	Module imported but unused
     # TC001: Move import into type checking block
     __init__.py:F401, TC001
+    pendulum/date.py:E800
     # F811:	Redefinition of unused name from line n
-    pendulum/tz/timezone.py:F811
+    pendulum/tz/timezone.py:F811, E800
 min_python_version = 3.7.0
 ban-relative-imports = true
 # flake8-use-fstring: https://github.com/MichaelKim0407/flake8-use-fstring#--percent-greedy-and---format-greedy
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 341859e8..7659ec43 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -64,8 +64,15 @@ jobs:
         if: steps.cache.outputs.cache-hit == 'true' && matrix.os != 'MacOS'
         run: timeout 10s poetry run pip --version || rm -rf .venv
 
-      - name: Install dependencies
-        run: poetry install --only main --only test -vvv
+      - name: Install runtime, testing, and typing dependencies
+        run: poetry install --only main --only test --only typing -vvv
+
+      - name: Run type checking
+        run: poetry run mypy
+
+      - name: Uninstall typing dependencies
+        # This ensures pendulum runs without typing_extensions installed
+        run: poetry install --only main --only test --sync --no-root -vvv
 
       - name: Test Pure Python
         run: |
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index ca4f1607..2ee2fd44 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -58,14 +58,3 @@ repos:
         exclude: ^build\.py$
         args:
           - --py37-plus
-
-  - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v0.982
-    hooks:
-      - id: mypy
-        pass_filenames: false
-        exclude: ^build\.py$
-        additional_dependencies:
-          - pytest>=7.1.2
-          - types-backports
-          - types-python-dateutil
diff --git a/pendulum/__init__.py b/pendulum/__init__.py
index 44912442..72f19eaf 100644
--- a/pendulum/__init__.py
+++ b/pendulum/__init__.py
@@ -4,6 +4,7 @@
 
 from typing import Union
 from typing import cast
+from typing import overload
 
 from pendulum.__version__ import __version__
 from pendulum.constants import DAYS_PER_WEEK
@@ -38,10 +39,10 @@
 from pendulum.testing.traveller import Traveller
 from pendulum.time import Time
 from pendulum.tz import UTC
+from pendulum.tz import fixed_timezone
 from pendulum.tz import local_timezone
 from pendulum.tz import set_local_timezone
 from pendulum.tz import test_local_timezone
-from pendulum.tz import timezone
 from pendulum.tz import timezones
 from pendulum.tz.timezone import FixedTimezone
 from pendulum.tz.timezone import Timezone
@@ -54,6 +55,34 @@
 _formatter = Formatter()
 
 
+@overload
+def timezone(name: int) -> FixedTimezone:
+    ...
+
+
+@overload
+def timezone(name: str) -> Timezone:
+    ...
+
+
+@overload
+def timezone(name: str | int) -> Timezone | FixedTimezone:
+    ...
+
+
+def timezone(name: str | int) -> Timezone | FixedTimezone:
+    """
+    Return a Timezone instance given its name.
+    """
+    if isinstance(name, int):
+        return fixed_timezone(name)
+
+    if name.lower() == "utc":
+        return UTC
+
+    return Timezone(name)
+
+
 def _safe_timezone(
     obj: str | float | _datetime.tzinfo | Timezone | FixedTimezone | None,
     dt: _datetime.datetime | None = None,
@@ -73,7 +102,7 @@ def _safe_timezone(
     elif isinstance(obj, _datetime.tzinfo):
         # zoneinfo
         if hasattr(obj, "key"):
-            obj = obj.key  # type: ignore
+            obj = obj.key
         # pytz
         elif hasattr(obj, "localize"):
             obj = obj.zone  # type: ignore
diff --git a/pendulum/_extensions/_helpers.pyi b/pendulum/_extensions/_helpers.pyi
index 99a53978..f7763557 100644
--- a/pendulum/_extensions/_helpers.pyi
+++ b/pendulum/_extensions/_helpers.pyi
@@ -1,8 +1,8 @@
 from __future__ import annotations
 
-from collections import namedtuple
 from datetime import date
 from datetime import datetime
+from typing import NamedTuple
 
 def days_in_year(year: int) -> int: ...
 def is_leap(year: int) -> bool: ...
@@ -11,12 +11,7 @@ def local_time(
     unix_time: int, utc_offset: int, microseconds: int
 ) -> tuple[int, int, int, int, int, int, int]: ...
 
-class PreciseDiff(
-    namedtuple(
-        "PreciseDiff",
-        "years months days " "hours minutes seconds microseconds " "total_days",
-    )
-):
+class PreciseDiff(NamedTuple):
     years: int
     months: int
     days: int
diff --git a/pendulum/_extensions/helpers.py b/pendulum/_extensions/helpers.py
index e9839507..e0b16a33 100644
--- a/pendulum/_extensions/helpers.py
+++ b/pendulum/_extensions/helpers.py
@@ -3,7 +3,7 @@
 import datetime
 import math
 
-from collections import namedtuple
+from typing import NamedTuple
 from typing import cast
 
 from pendulum.constants import DAY_OF_WEEK_TABLE
@@ -25,12 +25,7 @@
 from pendulum.utils._compat import zoneinfo
 
 
-class PreciseDiff(
-    namedtuple(
-        "PreciseDiff",
-        "years months days " "hours minutes seconds microseconds " "total_days",
-    )
-):
+class PreciseDiff(NamedTuple):
     years: int
     months: int
     days: int
diff --git a/pendulum/date.py b/pendulum/date.py
index f2aec479..0d8382a4 100644
--- a/pendulum/date.py
+++ b/pendulum/date.py
@@ -1,3 +1,5 @@
+# The following is only needed because of Python 3.7
+# mypy: no-warn-unused-ignores
 from __future__ import annotations
 
 import calendar
@@ -6,6 +8,7 @@
 from datetime import date
 from datetime import datetime
 from datetime import timedelta
+from typing import TYPE_CHECKING
 from typing import NoReturn
 from typing import cast
 from typing import overload
@@ -27,6 +30,10 @@
 from pendulum.interval import Interval
 from pendulum.mixins.default import FormattableMixin
 
+if TYPE_CHECKING:
+    from typing_extensions import Self
+    from typing_extensions import SupportsIndex
+
 
 class Date(FormattableMixin, date):
     # Names of days of the week
@@ -46,7 +53,7 @@ class Date(FormattableMixin, date):
 
     def set(
         self, year: int | None = None, month: int | None = None, day: int | None = None
-    ) -> Date:
+    ) -> Self:
         return self.replace(year=year, month=month, day=day)
 
     @property
@@ -110,7 +117,7 @@ def __repr__(self) -> str:
 
     # COMPARISONS
 
-    def closest(self, dt1: date, dt2: date) -> Date:
+    def closest(self, dt1: date, dt2: date) -> Self:
         """
         Get the closest date from the instance.
         """
@@ -122,7 +129,7 @@ def closest(self, dt1: date, dt2: date) -> Date:
 
         return dt2
 
-    def farthest(self, dt1: date, dt2: date) -> Date:
+    def farthest(self, dt1: date, dt2: date) -> Self:
         """
         Get the farthest date from the instance.
         """
@@ -188,7 +195,7 @@ def is_anniversary(self, dt: date | None = None) -> bool:
 
     def add(
         self, years: int = 0, months: int = 0, weeks: int = 0, days: int = 0
-    ) -> Date:
+    ) -> Self:
         """
         Add duration to the instance.
 
@@ -209,7 +216,7 @@ def add(
 
     def subtract(
         self, years: int = 0, months: int = 0, weeks: int = 0, days: int = 0
-    ) -> Date:
+    ) -> Self:
         """
         Remove duration from the instance.
 
@@ -220,7 +227,7 @@ def subtract(
         """
         return self.add(years=-years, months=-months, weeks=-weeks, days=-days)
 
-    def _add_timedelta(self, delta: timedelta) -> Date:
+    def _add_timedelta(self, delta: timedelta) -> Self:
         """
         Add timedelta duration to the instance.
 
@@ -236,7 +243,7 @@ def _add_timedelta(self, delta: timedelta) -> Date:
 
         return self.add(days=delta.days)
 
-    def _subtract_timedelta(self, delta: timedelta) -> Date:
+    def _subtract_timedelta(self, delta: timedelta) -> Self:
         """
         Remove timedelta duration from the instance.
 
@@ -252,25 +259,25 @@ def _subtract_timedelta(self, delta: timedelta) -> Date:
 
         return self.subtract(days=delta.days)
 
-    def __add__(self, other: timedelta) -> Date:
+    def __add__(self, other: timedelta) -> Self:
         if not isinstance(other, timedelta):
             return NotImplemented
 
         return self._add_timedelta(other)
 
-    @overload
-    def __sub__(self, delta: timedelta) -> Date:
+    @overload  # type: ignore[override]  # this is only needed because of Python 3.7
+    def __sub__(self, __delta: timedelta) -> Self:
         ...
 
     @overload
-    def __sub__(self, dt: datetime) -> NoReturn:
+    def __sub__(self, __dt: datetime) -> NoReturn:
         ...
 
     @overload
-    def __sub__(self, dt: Date) -> Interval:
+    def __sub__(self, __dt: Self) -> Interval:
         ...
 
-    def __sub__(self, other: timedelta | date) -> Date | Interval:
+    def __sub__(self, other: timedelta | date) -> Self | Interval:
         if isinstance(other, timedelta):
             return self._subtract_timedelta(other)
 
@@ -335,7 +342,7 @@ def diff_for_humans(
 
     # MODIFIERS
 
-    def start_of(self, unit: str) -> Date:
+    def start_of(self, unit: str) -> Self:
         """
         Returns a copy of the instance with the time reset
         with the following rules:
@@ -352,9 +359,9 @@ def start_of(self, unit: str) -> Date:
         if unit not in self._MODIFIERS_VALID_UNITS:
             raise ValueError(f'Invalid unit "{unit}" for start_of()')
 
-        return cast(Date, getattr(self, f"_start_of_{unit}")())
+        return cast("Self", getattr(self, f"_start_of_{unit}")())
 
-    def end_of(self, unit: str) -> Date:
+    def end_of(self, unit: str) -> Self:
         """
         Returns a copy of the instance with the time reset
         with the following rules:
@@ -370,45 +377,45 @@ def end_of(self, unit: str) -> Date:
         if unit not in self._MODIFIERS_VALID_UNITS:
             raise ValueError(f'Invalid unit "{unit}" for end_of()')
 
-        return cast(Date, getattr(self, f"_end_of_{unit}")())
+        return cast("Self", getattr(self, f"_end_of_{unit}")())
 
-    def _start_of_day(self) -> Date:
+    def _start_of_day(self) -> Self:
         """
         Compatibility method.
         """
         return self
 
-    def _end_of_day(self) -> Date:
+    def _end_of_day(self) -> Self:
         """
         Compatibility method
         """
         return self
 
-    def _start_of_month(self) -> Date:
+    def _start_of_month(self) -> Self:
         """
         Reset the date to the first day of the month.
         """
         return self.set(self.year, self.month, 1)
 
-    def _end_of_month(self) -> Date:
+    def _end_of_month(self) -> Self:
         """
         Reset the date to the last day of the month.
         """
         return self.set(self.year, self.month, self.days_in_month)
 
-    def _start_of_year(self) -> Date:
+    def _start_of_year(self) -> Self:
         """
         Reset the date to the first day of the year.
         """
         return self.set(self.year, 1, 1)
 
-    def _end_of_year(self) -> Date:
+    def _end_of_year(self) -> Self:
         """
         Reset the date to the last day of the year.
         """
         return self.set(self.year, 12, 31)
 
-    def _start_of_decade(self) -> Date:
+    def _start_of_decade(self) -> Self:
         """
         Reset the date to the first day of the decade.
         """
@@ -416,7 +423,7 @@ def _start_of_decade(self) -> Date:
 
         return self.set(year, 1, 1)
 
-    def _end_of_decade(self) -> Date:
+    def _end_of_decade(self) -> Self:
         """
         Reset the date to the last day of the decade.
         """
@@ -424,7 +431,7 @@ def _end_of_decade(self) -> Date:
 
         return self.set(year, 12, 31)
 
-    def _start_of_century(self) -> Date:
+    def _start_of_century(self) -> Self:
         """
         Reset the date to the first day of the century.
         """
@@ -432,7 +439,7 @@ def _start_of_century(self) -> Date:
 
         return self.set(year, 1, 1)
 
-    def _end_of_century(self) -> Date:
+    def _end_of_century(self) -> Self:
         """
         Reset the date to the last day of the century.
         """
@@ -440,7 +447,7 @@ def _end_of_century(self) -> Date:
 
         return self.set(year, 12, 31)
 
-    def _start_of_week(self) -> Date:
+    def _start_of_week(self) -> Self:
         """
         Reset the date to the first day of the week.
         """
@@ -451,7 +458,7 @@ def _start_of_week(self) -> Date:
 
         return dt.start_of("day")
 
-    def _end_of_week(self) -> Date:
+    def _end_of_week(self) -> Self:
         """
         Reset the date to the last day of the week.
         """
@@ -462,7 +469,7 @@ def _end_of_week(self) -> Date:
 
         return dt.end_of("day")
 
-    def next(self, day_of_week: int | None = None) -> Date:
+    def next(self, day_of_week: int | None = None) -> Self:
         """
         Modify to the next occurrence of a given day of the week.
         If no day_of_week is provided, modify to the next occurrence
@@ -483,7 +490,7 @@ def next(self, day_of_week: int | None = None) -> Date:
 
         return dt
 
-    def previous(self, day_of_week: int | None = None) -> Date:
+    def previous(self, day_of_week: int | None = None) -> Self:
         """
         Modify to the previous occurrence of a given day of the week.
         If no day_of_week is provided, modify to the previous occurrence
@@ -504,7 +511,7 @@ def previous(self, day_of_week: int | None = None) -> Date:
 
         return dt
 
-    def first_of(self, unit: str, day_of_week: int | None = None) -> Date:
+    def first_of(self, unit: str, day_of_week: int | None = None) -> Self:
         """
         Returns an instance set to the first occurrence
         of a given day of the week in the current unit.
@@ -519,9 +526,9 @@ def first_of(self, unit: str, day_of_week: int | None = None) -> Date:
         if unit not in ["month", "quarter", "year"]:
             raise ValueError(f'Invalid unit "{unit}" for first_of()')
 
-        return cast(Date, getattr(self, f"_first_of_{unit}")(day_of_week))
+        return cast("Self", getattr(self, f"_first_of_{unit}")(day_of_week))
 
-    def last_of(self, unit: str, day_of_week: int | None = None) -> Date:
+    def last_of(self, unit: str, day_of_week: int | None = None) -> Self:
         """
         Returns an instance set to the last occurrence
         of a given day of the week in the current unit.
@@ -536,9 +543,9 @@ def last_of(self, unit: str, day_of_week: int | None = None) -> Date:
         if unit not in ["month", "quarter", "year"]:
             raise ValueError(f'Invalid unit "{unit}" for first_of()')
 
-        return cast(Date, getattr(self, f"_last_of_{unit}")(day_of_week))
+        return cast("Self", getattr(self, f"_last_of_{unit}")(day_of_week))
 
-    def nth_of(self, unit: str, nth: int, day_of_week: int) -> Date:
+    def nth_of(self, unit: str, nth: int, day_of_week: int) -> Self:
         """
         Returns a new instance set to the given occurrence
         of a given day of the week in the current unit.
@@ -555,7 +562,7 @@ def nth_of(self, unit: str, nth: int, day_of_week: int) -> Date:
         if unit not in ["month", "quarter", "year"]:
             raise ValueError(f'Invalid unit "{unit}" for first_of()')
 
-        dt = cast(Date, getattr(self, f"_nth_of_{unit}")(nth, day_of_week))
+        dt = cast("Self", getattr(self, f"_nth_of_{unit}")(nth, day_of_week))
         if not dt:
             raise PendulumException(
                 f"Unable to find occurence {nth}"
@@ -564,7 +571,7 @@ def nth_of(self, unit: str, nth: int, day_of_week: int) -> Date:
 
         return dt
 
-    def _first_of_month(self, day_of_week: int) -> Date:
+    def _first_of_month(self, day_of_week: int) -> Self:
         """
         Modify to the first occurrence of a given day of the week
         in the current month. If no day_of_week is provided,
@@ -589,7 +596,7 @@ def _first_of_month(self, day_of_week: int) -> Date:
 
         return dt.set(day=day_of_month)
 
-    def _last_of_month(self, day_of_week: int | None = None) -> Date:
+    def _last_of_month(self, day_of_week: int | None = None) -> Self:
         """
         Modify to the last occurrence of a given day of the week
         in the current month. If no day_of_week is provided,
@@ -614,7 +621,7 @@ def _last_of_month(self, day_of_week: int | None = None) -> Date:
 
         return dt.set(day=day_of_month)
 
-    def _nth_of_month(self, nth: int, day_of_week: int) -> Date | None:
+    def _nth_of_month(self, nth: int, day_of_week: int) -> Self | None:
         """
         Modify to the given occurrence of a given day of the week
         in the current month. If the calculated occurrence is outside,
@@ -635,7 +642,7 @@ def _nth_of_month(self, nth: int, day_of_week: int) -> Date | None:
 
         return None
 
-    def _first_of_quarter(self, day_of_week: int | None = None) -> Date:
+    def _first_of_quarter(self, day_of_week: int | None = None) -> Self:
         """
         Modify to the first occurrence of a given day of the week
         in the current quarter. If no day_of_week is provided,
@@ -646,7 +653,7 @@ def _first_of_quarter(self, day_of_week: int | None = None) -> Date:
             "month", day_of_week
         )
 
-    def _last_of_quarter(self, day_of_week: int | None = None) -> Date:
+    def _last_of_quarter(self, day_of_week: int | None = None) -> Self:
         """
         Modify to the last occurrence of a given day of the week
         in the current quarter. If no day_of_week is provided,
@@ -655,7 +662,7 @@ def _last_of_quarter(self, day_of_week: int | None = None) -> Date:
         """
         return self.set(self.year, self.quarter * 3, 1).last_of("month", day_of_week)
 
-    def _nth_of_quarter(self, nth: int, day_of_week: int) -> Date | None:
+    def _nth_of_quarter(self, nth: int, day_of_week: int) -> Self | None:
         """
         Modify to the given occurrence of a given day of the week
         in the current quarter. If the calculated occurrence is outside,
@@ -678,7 +685,7 @@ def _nth_of_quarter(self, nth: int, day_of_week: int) -> Date | None:
 
         return self.set(self.year, dt.month, dt.day)
 
-    def _first_of_year(self, day_of_week: int | None = None) -> Date:
+    def _first_of_year(self, day_of_week: int | None = None) -> Self:
         """
         Modify to the first occurrence of a given day of the week
         in the current year. If no day_of_week is provided,
@@ -687,7 +694,7 @@ def _first_of_year(self, day_of_week: int | None = None) -> Date:
         """
         return self.set(month=1).first_of("month", day_of_week)
 
-    def _last_of_year(self, day_of_week: int | None = None) -> Date:
+    def _last_of_year(self, day_of_week: int | None = None) -> Self:
         """
         Modify to the last occurrence of a given day of the week
         in the current year. If no day_of_week is provided,
@@ -696,7 +703,7 @@ def _last_of_year(self, day_of_week: int | None = None) -> Date:
         """
         return self.set(month=MONTHS_PER_YEAR).last_of("month", day_of_week)
 
-    def _nth_of_year(self, nth: int, day_of_week: int) -> Date | None:
+    def _nth_of_year(self, nth: int, day_of_week: int) -> Self | None:
         """
         Modify to the given occurrence of a given day of the week
         in the current year. If the calculated occurrence is outside,
@@ -717,7 +724,7 @@ def _nth_of_year(self, nth: int, day_of_week: int) -> Date | None:
 
         return self.set(self.year, dt.month, dt.day)
 
-    def average(self, dt: date | None = None) -> Date:
+    def average(self, dt: date | None = None) -> Self:
         """
         Modify the current instance to the average
         of a given instance (default now) and the current instance.
@@ -730,29 +737,29 @@ def average(self, dt: date | None = None) -> Date:
     # Native methods override
 
     @classmethod
-    def today(cls) -> Date:
+    def today(cls) -> Self:
         dt = date.today()
 
         return cls(dt.year, dt.month, dt.day)
 
     @classmethod
-    def fromtimestamp(cls, t: float) -> Date:
+    def fromtimestamp(cls, t: float) -> Self:
         dt = super().fromtimestamp(t)
 
         return cls(dt.year, dt.month, dt.day)
 
     @classmethod
-    def fromordinal(cls, n: int) -> Date:
+    def fromordinal(cls, n: int) -> Self:
         dt = super().fromordinal(n)
 
         return cls(dt.year, dt.month, dt.day)
 
     def replace(
         self,
-        year: int | None = None,
-        month: int | None = None,
-        day: int | None = None,
-    ) -> Date:
+        year: SupportsIndex | None = None,
+        month: SupportsIndex | None = None,
+        day: SupportsIndex | None = None,
+    ) -> Self:
         year = year if year is not None else self.year
         month = month if month is not None else self.month
         day = day if day is not None else self.day
diff --git a/pendulum/datetime.py b/pendulum/datetime.py
index 52ad3cc7..d265aece 100644
--- a/pendulum/datetime.py
+++ b/pendulum/datetime.py
@@ -2,10 +2,12 @@
 
 import calendar
 import datetime
+import sys
 
 from typing import TYPE_CHECKING
 from typing import Any
 from typing import Callable
+from typing import ClassVar
 from typing import Optional
 from typing import cast
 from typing import overload
@@ -38,14 +40,17 @@
 from pendulum.tz import local_timezone
 from pendulum.tz.timezone import FixedTimezone
 from pendulum.tz.timezone import Timezone
-from pendulum.utils._compat import PY38
 
 if TYPE_CHECKING:
-    from typing import Literal
+    from typing_extensions import Literal
+    from typing_extensions import Self
+    from typing_extensions import SupportsIndex
 
 
 class DateTime(datetime.datetime, Date):
-    EPOCH: DateTime
+    EPOCH: ClassVar[DateTime]
+    min: ClassVar[DateTime]
+    max: ClassVar[DateTime]
 
     # Formats
 
@@ -80,17 +85,17 @@ class DateTime(datetime.datetime, Date):
     @classmethod
     def create(
         cls,
-        year: int,
-        month: int,
-        day: int,
-        hour: int = 0,
-        minute: int = 0,
-        second: int = 0,
-        microsecond: int = 0,
+        year: SupportsIndex,
+        month: SupportsIndex,
+        day: SupportsIndex,
+        hour: SupportsIndex = 0,
+        minute: SupportsIndex = 0,
+        second: SupportsIndex = 0,
+        microsecond: SupportsIndex = 0,
         tz: str | float | Timezone | FixedTimezone | None | datetime.tzinfo = UTC,
         fold: int = 1,
         raise_on_unknown_times: bool = False,
-    ) -> DateTime:
+    ) -> Self:
         """
         Creates a new DateTime instance from a specific date and time.
         """
@@ -118,18 +123,18 @@ def create(
 
     @overload
     @classmethod
-    def now(cls, tz: datetime.tzinfo | None = None) -> DateTime:
+    def now(cls, tz: datetime.tzinfo | None = None) -> Self:
         ...
 
     @overload
     @classmethod
-    def now(cls, tz: str | Timezone | FixedTimezone | None = None) -> DateTime:
+    def now(cls, tz: str | Timezone | FixedTimezone | None = None) -> Self:
         ...
 
     @classmethod
     def now(
         cls, tz: str | Timezone | FixedTimezone | datetime.tzinfo | None = None
-    ) -> DateTime:
+    ) -> Self:
         """
         Get a DateTime instance for the current date and time.
         """
@@ -155,14 +160,14 @@ def now(
         )
 
     @classmethod
-    def utcnow(cls) -> DateTime:
+    def utcnow(cls) -> Self:
         """
         Get a DateTime instance for the current date and time in UTC.
         """
         return cls.now(UTC)
 
     @classmethod
-    def today(cls) -> DateTime:
+    def today(cls) -> Self:
         return cls.now()
 
     @classmethod
@@ -181,7 +186,7 @@ def set(
         second: int | None = None,
         microsecond: int | None = None,
         tz: str | float | Timezone | FixedTimezone | datetime.tzinfo | None = None,
-    ) -> DateTime:
+    ) -> Self:
         if year is None:
             year = self.year
         if month is None:
@@ -199,7 +204,7 @@ def set(
         if tz is None:
             tz = self.tz
 
-        return DateTime.create(
+        return self.__class__.create(
             year, month, day, hour, minute, second, microsecond, tz=tz
         )
 
@@ -286,7 +291,7 @@ def date(self) -> Date:
     def time(self) -> Time:
         return Time(self.hour, self.minute, self.second, self.microsecond)
 
-    def naive(self) -> DateTime:
+    def naive(self) -> Self:
         """
         Return the DateTime without timezone information.
         """
@@ -300,7 +305,7 @@ def naive(self) -> DateTime:
             self.microsecond,
         )
 
-    def on(self, year: int, month: int, day: int) -> DateTime:
+    def on(self, year: int, month: int, day: int) -> Self:
         """
         Returns a new instance with the current date set to a different date.
         """
@@ -308,7 +313,7 @@ def on(self, year: int, month: int, day: int) -> DateTime:
 
     def at(
         self, hour: int, minute: int = 0, second: int = 0, microsecond: int = 0
-    ) -> DateTime:
+    ) -> Self:
         """
         Returns a new instance with the current time to a different time.
         """
@@ -316,7 +321,7 @@ def at(
             hour=hour, minute=minute, second=second, microsecond=microsecond
         )
 
-    def in_timezone(self, tz: str | Timezone | FixedTimezone) -> DateTime:
+    def in_timezone(self, tz: str | Timezone | FixedTimezone) -> Self:
         """
         Set the instance's timezone from a string or object.
         """
@@ -326,9 +331,9 @@ def in_timezone(self, tz: str | Timezone | FixedTimezone) -> DateTime:
         if not self.timezone:
             dt = dt.replace(fold=1)
 
-        return cast(DateTime, tz.convert(dt))
+        return tz.convert(dt)
 
-    def in_tz(self, tz: str | Timezone | FixedTimezone) -> DateTime:
+    def in_tz(self, tz: str | Timezone | FixedTimezone) -> Self:
         """
         Set the instance's timezone from a string or object.
         """
@@ -540,7 +545,7 @@ def add(
         minutes: int = 0,
         seconds: float = 0,
         microseconds: int = 0,
-    ) -> DateTime:
+    ) -> Self:
         """
         Add a duration to the instance.
 
@@ -577,7 +582,7 @@ def add(
         )
 
         if units_of_variable_length or self.tz is None:
-            return DateTime.create(
+            return self.__class__.create(
                 dt.year,
                 dt.month,
                 dt.day,
@@ -623,7 +628,7 @@ def subtract(
         minutes: int = 0,
         seconds: float = 0,
         microseconds: int = 0,
-    ) -> DateTime:
+    ) -> Self:
         """
         Remove duration from the instance.
         """
@@ -641,7 +646,7 @@ def subtract(
     # Adding a final underscore to the method name
     # to avoid errors for PyPy which already defines
     # a _add_timedelta method
-    def _add_timedelta_(self, delta: datetime.timedelta) -> DateTime:
+    def _add_timedelta_(self, delta: datetime.timedelta) -> Self:
         """
         Add timedelta duration to the instance.
         """
@@ -663,7 +668,7 @@ def _add_timedelta_(self, delta: datetime.timedelta) -> DateTime:
 
         return self.add(seconds=delta.total_seconds())
 
-    def _subtract_timedelta(self, delta: datetime.timedelta) -> DateTime:
+    def _subtract_timedelta(self, delta: datetime.timedelta) -> Self:
         """
         Remove timedelta duration from the instance.
         """
@@ -722,7 +727,7 @@ def diff_for_humans(  # type: ignore[override]
         return pendulum.format_diff(diff, is_now, absolute, locale)
 
     # Modifiers
-    def start_of(self, unit: str) -> DateTime:
+    def start_of(self, unit: str) -> Self:
         """
         Returns a copy of the instance with the time reset
         with the following rules:
@@ -740,9 +745,9 @@ def start_of(self, unit: str) -> DateTime:
         if unit not in self._MODIFIERS_VALID_UNITS:
             raise ValueError(f'Invalid unit "{unit}" for start_of()')
 
-        return cast(DateTime, getattr(self, f"_start_of_{unit}")())
+        return cast("Self", getattr(self, f"_start_of_{unit}")())
 
-    def end_of(self, unit: str) -> DateTime:
+    def end_of(self, unit: str) -> Self:
         """
         Returns a copy of the instance with the time reset
         with the following rules:
@@ -760,83 +765,83 @@ def end_of(self, unit: str) -> DateTime:
         if unit not in self._MODIFIERS_VALID_UNITS:
             raise ValueError(f'Invalid unit "{unit}" for end_of()')
 
-        return cast(DateTime, getattr(self, f"_end_of_{unit}")())
+        return cast("Self", getattr(self, f"_end_of_{unit}")())
 
-    def _start_of_second(self) -> DateTime:
+    def _start_of_second(self) -> Self:
         """
         Reset microseconds to 0.
         """
         return self.set(microsecond=0)
 
-    def _end_of_second(self) -> DateTime:
+    def _end_of_second(self) -> Self:
         """
         Set microseconds to 999999.
         """
         return self.set(microsecond=999999)
 
-    def _start_of_minute(self) -> DateTime:
+    def _start_of_minute(self) -> Self:
         """
         Reset seconds and microseconds to 0.
         """
         return self.set(second=0, microsecond=0)
 
-    def _end_of_minute(self) -> DateTime:
+    def _end_of_minute(self) -> Self:
         """
         Set seconds to 59 and microseconds to 999999.
         """
         return self.set(second=59, microsecond=999999)
 
-    def _start_of_hour(self) -> DateTime:
+    def _start_of_hour(self) -> Self:
         """
         Reset minutes, seconds and microseconds to 0.
         """
         return self.set(minute=0, second=0, microsecond=0)
 
-    def _end_of_hour(self) -> DateTime:
+    def _end_of_hour(self) -> Self:
         """
         Set minutes and seconds to 59 and microseconds to 999999.
         """
         return self.set(minute=59, second=59, microsecond=999999)
 
-    def _start_of_day(self) -> DateTime:
+    def _start_of_day(self) -> Self:
         """
         Reset the time to 00:00:00.
         """
         return self.at(0, 0, 0, 0)
 
-    def _end_of_day(self) -> DateTime:
+    def _end_of_day(self) -> Self:
         """
         Reset the time to 23:59:59.999999.
         """
         return self.at(23, 59, 59, 999999)
 
-    def _start_of_month(self) -> DateTime:
+    def _start_of_month(self) -> Self:
         """
         Reset the date to the first day of the month and the time to 00:00:00.
         """
         return self.set(self.year, self.month, 1, 0, 0, 0, 0)
 
-    def _end_of_month(self) -> DateTime:
+    def _end_of_month(self) -> Self:
         """
         Reset the date to the last day of the month
         and the time to 23:59:59.999999.
         """
         return self.set(self.year, self.month, self.days_in_month, 23, 59, 59, 999999)
 
-    def _start_of_year(self) -> DateTime:
+    def _start_of_year(self) -> Self:
         """
         Reset the date to the first day of the year and the time to 00:00:00.
         """
         return self.set(self.year, 1, 1, 0, 0, 0, 0)
 
-    def _end_of_year(self) -> DateTime:
+    def _end_of_year(self) -> Self:
         """
         Reset the date to the last day of the year
         and the time to 23:59:59.999999.
         """
         return self.set(self.year, 12, 31, 23, 59, 59, 999999)
 
-    def _start_of_decade(self) -> DateTime:
+    def _start_of_decade(self) -> Self:
         """
         Reset the date to the first day of the decade
         and the time to 00:00:00.
@@ -844,7 +849,7 @@ def _start_of_decade(self) -> DateTime:
         year = self.year - self.year % YEARS_PER_DECADE
         return self.set(year, 1, 1, 0, 0, 0, 0)
 
-    def _end_of_decade(self) -> DateTime:
+    def _end_of_decade(self) -> Self:
         """
         Reset the date to the last day of the decade
         and the time to 23:59:59.999999.
@@ -853,7 +858,7 @@ def _end_of_decade(self) -> DateTime:
 
         return self.set(year, 12, 31, 23, 59, 59, 999999)
 
-    def _start_of_century(self) -> DateTime:
+    def _start_of_century(self) -> Self:
         """
         Reset the date to the first day of the century
         and the time to 00:00:00.
@@ -862,7 +867,7 @@ def _start_of_century(self) -> DateTime:
 
         return self.set(year, 1, 1, 0, 0, 0, 0)
 
-    def _end_of_century(self) -> DateTime:
+    def _end_of_century(self) -> Self:
         """
         Reset the date to the last day of the century
         and the time to 23:59:59.999999.
@@ -871,7 +876,7 @@ def _end_of_century(self) -> DateTime:
 
         return self.set(year, 12, 31, 23, 59, 59, 999999)
 
-    def _start_of_week(self) -> DateTime:
+    def _start_of_week(self) -> Self:
         """
         Reset the date to the first day of the week
         and the time to 00:00:00.
@@ -883,7 +888,7 @@ def _start_of_week(self) -> DateTime:
 
         return dt.start_of("day")
 
-    def _end_of_week(self) -> DateTime:
+    def _end_of_week(self) -> Self:
         """
         Reset the date to the last day of the week
         and the time to 23:59:59.
@@ -895,7 +900,7 @@ def _end_of_week(self) -> DateTime:
 
         return dt.end_of("day")
 
-    def next(self, day_of_week: int | None = None, keep_time: bool = False) -> DateTime:
+    def next(self, day_of_week: int | None = None, keep_time: bool = False) -> Self:
         """
         Modify to the next occurrence of a given day of the week.
         If no day_of_week is provided, modify to the next occurrence
@@ -919,9 +924,7 @@ def next(self, day_of_week: int | None = None, keep_time: bool = False) -> DateT
 
         return dt
 
-    def previous(
-        self, day_of_week: int | None = None, keep_time: bool = False
-    ) -> DateTime:
+    def previous(self, day_of_week: int | None = None, keep_time: bool = False) -> Self:
         """
         Modify to the previous occurrence of a given day of the week.
         If no day_of_week is provided, modify to the previous occurrence
@@ -945,7 +948,7 @@ def previous(
 
         return dt
 
-    def first_of(self, unit: str, day_of_week: int | None = None) -> DateTime:
+    def first_of(self, unit: str, day_of_week: int | None = None) -> Self:
         """
         Returns an instance set to the first occurrence
         of a given day of the week in the current unit.
@@ -957,9 +960,9 @@ def first_of(self, unit: str, day_of_week: int | None = None) -> DateTime:
         if unit not in ["month", "quarter", "year"]:
             raise ValueError(f'Invalid unit "{unit}" for first_of()')
 
-        return cast(DateTime, getattr(self, f"_first_of_{unit}")(day_of_week))
+        return cast("Self", getattr(self, f"_first_of_{unit}")(day_of_week))
 
-    def last_of(self, unit: str, day_of_week: int | None = None) -> DateTime:
+    def last_of(self, unit: str, day_of_week: int | None = None) -> Self:
         """
         Returns an instance set to the last occurrence
         of a given day of the week in the current unit.
@@ -971,9 +974,9 @@ def last_of(self, unit: str, day_of_week: int | None = None) -> DateTime:
         if unit not in ["month", "quarter", "year"]:
             raise ValueError(f'Invalid unit "{unit}" for first_of()')
 
-        return cast(DateTime, getattr(self, f"_last_of_{unit}")(day_of_week))
+        return cast("Self", getattr(self, f"_last_of_{unit}")(day_of_week))
 
-    def nth_of(self, unit: str, nth: int, day_of_week: int) -> DateTime:
+    def nth_of(self, unit: str, nth: int, day_of_week: int) -> Self:
         """
         Returns a new instance set to the given occurrence
         of a given day of the week in the current unit.
@@ -986,9 +989,7 @@ def nth_of(self, unit: str, nth: int, day_of_week: int) -> DateTime:
         if unit not in ["month", "quarter", "year"]:
             raise ValueError(f'Invalid unit "{unit}" for first_of()')
 
-        dt = cast(
-            Optional[DateTime], getattr(self, f"_nth_of_{unit}")(nth, day_of_week)
-        )
+        dt = cast(Optional["Self"], getattr(self, f"_nth_of_{unit}")(nth, day_of_week))
         if not dt:
             raise PendulumException(
                 f"Unable to find occurence {nth}"
@@ -997,7 +998,7 @@ def nth_of(self, unit: str, nth: int, day_of_week: int) -> DateTime:
 
         return dt
 
-    def _first_of_month(self, day_of_week: int | None = None) -> DateTime:
+    def _first_of_month(self, day_of_week: int | None = None) -> Self:
         """
         Modify to the first occurrence of a given day of the week
         in the current month. If no day_of_week is provided,
@@ -1020,7 +1021,7 @@ def _first_of_month(self, day_of_week: int | None = None) -> DateTime:
 
         return dt.set(day=day_of_month)
 
-    def _last_of_month(self, day_of_week: int | None = None) -> DateTime:
+    def _last_of_month(self, day_of_week: int | None = None) -> Self:
         """
         Modify to the last occurrence of a given day of the week
         in the current month. If no day_of_week is provided,
@@ -1043,9 +1044,7 @@ def _last_of_month(self, day_of_week: int | None = None) -> DateTime:
 
         return dt.set(day=day_of_month)
 
-    def _nth_of_month(
-        self, nth: int, day_of_week: int | None = None
-    ) -> DateTime | None:
+    def _nth_of_month(self, nth: int, day_of_week: int | None = None) -> Self | None:
         """
         Modify to the given occurrence of a given day of the week
         in the current month. If the calculated occurrence is outside,
@@ -1066,7 +1065,7 @@ def _nth_of_month(
 
         return None
 
-    def _first_of_quarter(self, day_of_week: int | None = None) -> DateTime:
+    def _first_of_quarter(self, day_of_week: int | None = None) -> Self:
         """
         Modify to the first occurrence of a given day of the week
         in the current quarter. If no day_of_week is provided,
@@ -1077,7 +1076,7 @@ def _first_of_quarter(self, day_of_week: int | None = None) -> DateTime:
             "month", day_of_week
         )
 
-    def _last_of_quarter(self, day_of_week: int | None = None) -> DateTime:
+    def _last_of_quarter(self, day_of_week: int | None = None) -> Self:
         """
         Modify to the last occurrence of a given day of the week
         in the current quarter. If no day_of_week is provided,
@@ -1086,9 +1085,7 @@ def _last_of_quarter(self, day_of_week: int | None = None) -> DateTime:
         """
         return self.on(self.year, self.quarter * 3, 1).last_of("month", day_of_week)
 
-    def _nth_of_quarter(
-        self, nth: int, day_of_week: int | None = None
-    ) -> DateTime | None:
+    def _nth_of_quarter(self, nth: int, day_of_week: int | None = None) -> Self | None:
         """
         Modify to the given occurrence of a given day of the week
         in the current quarter. If the calculated occurrence is outside,
@@ -1111,7 +1108,7 @@ def _nth_of_quarter(
 
         return self.on(self.year, dt.month, dt.day).start_of("day")
 
-    def _first_of_year(self, day_of_week: int | None = None) -> DateTime:
+    def _first_of_year(self, day_of_week: int | None = None) -> Self:
         """
         Modify to the first occurrence of a given day of the week
         in the current year. If no day_of_week is provided,
@@ -1120,7 +1117,7 @@ def _first_of_year(self, day_of_week: int | None = None) -> DateTime:
         """
         return self.set(month=1).first_of("month", day_of_week)
 
-    def _last_of_year(self, day_of_week: int | None = None) -> DateTime:
+    def _last_of_year(self, day_of_week: int | None = None) -> Self:
         """
         Modify to the last occurrence of a given day of the week
         in the current year. If no day_of_week is provided,
@@ -1129,7 +1126,7 @@ def _last_of_year(self, day_of_week: int | None = None) -> DateTime:
         """
         return self.set(month=MONTHS_PER_YEAR).last_of("month", day_of_week)
 
-    def _nth_of_year(self, nth: int, day_of_week: int | None = None) -> DateTime | None:
+    def _nth_of_year(self, nth: int, day_of_week: int | None = None) -> Self | None:
         """
         Modify to the given occurrence of a given day of the week
         in the current year. If the calculated occurrence is outside,
@@ -1152,7 +1149,7 @@ def _nth_of_year(self, nth: int, day_of_week: int | None = None) -> DateTime | N
 
     def average(  # type: ignore[override]
         self, dt: datetime.datetime | None = None
-    ) -> DateTime:
+    ) -> Self:
         """
         Modify the current instance to the average
         of a given instance (default now) and the current instance.
@@ -1166,16 +1163,14 @@ def average(  # type: ignore[override]
         )
 
     @overload  # type: ignore[override]
-    def __sub__(self, other: datetime.timedelta) -> DateTime:
+    def __sub__(self, other: datetime.timedelta) -> Self:
         ...
 
     @overload
     def __sub__(self, other: DateTime) -> Interval:
         ...
 
-    def __sub__(
-        self, other: datetime.datetime | datetime.timedelta
-    ) -> DateTime | Interval:
+    def __sub__(self, other: datetime.datetime | datetime.timedelta) -> Self | Interval:
         if isinstance(other, datetime.timedelta):
             return self._subtract_timedelta(other)
 
@@ -1218,11 +1213,11 @@ def __rsub__(self, other: datetime.datetime) -> Interval:
 
         return self.diff(other, False)
 
-    def __add__(self, other: datetime.timedelta) -> DateTime:
+    def __add__(self, other: datetime.timedelta) -> Self:
         if not isinstance(other, datetime.timedelta):
             return NotImplemented
 
-        if PY38:
+        if sys.version_info >= (3, 8):
             # This is a workaround for Python 3.8+
             # since calling astimezone() will call this method
             # instead of the base datetime class one.
@@ -1230,11 +1225,11 @@ def __add__(self, other: datetime.timedelta) -> DateTime:
 
             caller = inspect.stack()[1][3]
             if caller == "astimezone":
-                return cast(DateTime, super().__add__(other))
+                return super().__add__(other)
 
         return self._add_timedelta_(other)
 
-    def __radd__(self, other: datetime.timedelta) -> DateTime:
+    def __radd__(self, other: datetime.timedelta) -> Self:
         return self.__add__(other)
 
     # Native methods override
@@ -1264,7 +1259,7 @@ def combine(
     ) -> DateTime:
         return pendulum.instance(datetime.datetime.combine(date, time), tz=tzinfo)
 
-    def astimezone(self, tz: datetime.tzinfo | None = None) -> DateTime:
+    def astimezone(self, tz: datetime.tzinfo | None = None) -> Self:
         dt = super().astimezone(tz)
 
         return self.__class__(
@@ -1281,16 +1276,16 @@ def astimezone(self, tz: datetime.tzinfo | None = None) -> DateTime:
 
     def replace(
         self,
-        year: int | None = None,
-        month: int | None = None,
-        day: int | None = None,
-        hour: int | None = None,
-        minute: int | None = None,
-        second: int | None = None,
-        microsecond: int | None = None,
+        year: SupportsIndex | None = None,
+        month: SupportsIndex | None = None,
+        day: SupportsIndex | None = None,
+        hour: SupportsIndex | None = None,
+        minute: SupportsIndex | None = None,
+        second: SupportsIndex | None = None,
+        microsecond: SupportsIndex | None = None,
         tzinfo: bool | datetime.tzinfo | Literal[True] | None = True,
         fold: int | None = None,
-    ) -> DateTime:
+    ) -> Self:
         if year is None:
             year = self.year
         if month is None:
@@ -1313,7 +1308,7 @@ def replace(
         if tzinfo is not None:
             tzinfo = pendulum._safe_timezone(tzinfo)
 
-        return DateTime.create(
+        return self.__class__.create(
             year,
             month,
             day,
@@ -1329,7 +1324,7 @@ def __getnewargs__(self) -> tuple[DateTime]:
         return (self,)
 
     def _getstate(
-        self, protocol: int = 3
+        self, protocol: SupportsIndex = 3
     ) -> tuple[int, int, int, int, int, int, int, datetime.tzinfo | None]:
         return (
             self.year,
@@ -1349,8 +1344,8 @@ def __reduce__(
     ]:
         return self.__reduce_ex__(2)
 
-    def __reduce_ex__(  # type: ignore[override]
-        self, protocol: int
+    def __reduce_ex__(
+        self, protocol: SupportsIndex
     ) -> tuple[
         type[DateTime], tuple[int, int, int, int, int, int, int, datetime.tzinfo | None]
     ]:
@@ -1374,8 +1369,6 @@ def _cmp(self, other: datetime.datetime, **kwargs: Any) -> int:
         return 0 if dt == other else 1 if dt > other else -1
 
 
-DateTime.min: DateTime = DateTime(1, 1, 1, 0, 0, tzinfo=UTC)  # type: ignore[misc]
-DateTime.max: DateTime = DateTime(  # type: ignore[misc]
-    9999, 12, 31, 23, 59, 59, 999999, tzinfo=UTC
-)
-DateTime.EPOCH: DateTime = DateTime(1970, 1, 1, tzinfo=UTC)  # type: ignore[misc]
+DateTime.min = DateTime(1, 1, 1, 0, 0, tzinfo=UTC)
+DateTime.max = DateTime(9999, 12, 31, 23, 59, 59, 999999, tzinfo=UTC)
+DateTime.EPOCH = DateTime(1970, 1, 1, tzinfo=UTC)
diff --git a/pendulum/duration.py b/pendulum/duration.py
index a3a68b1a..2e9daf2d 100644
--- a/pendulum/duration.py
+++ b/pendulum/duration.py
@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 from datetime import timedelta
+from typing import TYPE_CHECKING
 from typing import cast
 from typing import overload
 
@@ -12,6 +13,9 @@
 from pendulum.constants import US_PER_SECOND
 from pendulum.utils._compat import PYPY
 
+if TYPE_CHECKING:
+    from typing_extensions import Self
+
 
 def _divide_and_round(a: float, b: float) -> int:
     """divide a by b and round result to the nearest integer
@@ -74,7 +78,7 @@ def __new__(
         weeks: float = 0,
         years: float = 0,
         months: float = 0,
-    ) -> Duration:
+    ) -> Self:
         if not isinstance(years, int) or not isinstance(months, int):
             raise ValueError("Float year and months are not supported")
 
@@ -313,7 +317,7 @@ def __repr__(self) -> str:
 
         return rep.replace(", )", ")")
 
-    def __add__(self, other: timedelta) -> Duration:
+    def __add__(self, other: timedelta) -> Self:
         if isinstance(other, timedelta):
             return self.__class__(seconds=self.total_seconds() + other.total_seconds())
 
@@ -321,13 +325,13 @@ def __add__(self, other: timedelta) -> Duration:
 
     __radd__ = __add__
 
-    def __sub__(self, other: timedelta) -> Duration:
+    def __sub__(self, other: timedelta) -> Self:
         if isinstance(other, timedelta):
             return self.__class__(seconds=self.total_seconds() - other.total_seconds())
 
         return NotImplemented
 
-    def __neg__(self) -> Duration:
+    def __neg__(self) -> Self:
         return self.__class__(
             years=-self._years,
             months=-self._months,
@@ -340,7 +344,7 @@ def __neg__(self) -> Duration:
     def _to_microseconds(self) -> int:
         return (self._days * (24 * 3600) + self._seconds) * 1000000 + self._microseconds
 
-    def __mul__(self, other: int | float) -> Duration:
+    def __mul__(self, other: int | float) -> Self:
         if isinstance(other, int):
             return self.__class__(
                 years=self._years * other,
@@ -363,7 +367,7 @@ def __floordiv__(self, other: timedelta) -> int:
         ...
 
     @overload
-    def __floordiv__(self, other: int) -> Duration:
+    def __floordiv__(self, other: int) -> Self:
         ...
 
     def __floordiv__(self, other: int | timedelta) -> int | Duration:
@@ -388,10 +392,10 @@ def __truediv__(self, other: timedelta) -> float:
         ...
 
     @overload
-    def __truediv__(self, other: float) -> Duration:
+    def __truediv__(self, other: float) -> Self:
         ...
 
-    def __truediv__(self, other: int | float | timedelta) -> Duration | float:
+    def __truediv__(self, other: int | float | timedelta) -> Self | float:
         if not isinstance(other, (int, float, timedelta)):
             return NotImplemented
 
@@ -421,7 +425,7 @@ def __truediv__(self, other: int | float | timedelta) -> Duration | float:
 
     __div__ = __floordiv__
 
-    def __mod__(self, other: timedelta) -> Duration:
+    def __mod__(self, other: timedelta) -> Self:
         if isinstance(other, timedelta):
             r = self._to_microseconds() % other._to_microseconds()  # type: ignore[attr-defined]
 
diff --git a/pendulum/helpers.py b/pendulum/helpers.py
index 13b7f221..72c527db 100644
--- a/pendulum/helpers.py
+++ b/pendulum/helpers.py
@@ -40,12 +40,12 @@
     from pendulum._extensions._helpers import timestamp
     from pendulum._extensions._helpers import week_day
 except ImportError:
-    from pendulum._extensions.helpers import PreciseDiff  # type: ignore[misc]
+    from pendulum._extensions.helpers import PreciseDiff  # type: ignore[assignment]
     from pendulum._extensions.helpers import days_in_year
     from pendulum._extensions.helpers import is_leap
     from pendulum._extensions.helpers import is_long_year
     from pendulum._extensions.helpers import local_time
-    from pendulum._extensions.helpers import precise_diff  # type: ignore[misc]
+    from pendulum._extensions.helpers import precise_diff  # type: ignore[assignment]
     from pendulum._extensions.helpers import timestamp
     from pendulum._extensions.helpers import week_day
 
@@ -54,7 +54,7 @@
 
 @overload
 def add_duration(
-    dt: datetime,
+    dt: _DT,
     years: int = 0,
     months: int = 0,
     weeks: int = 0,
@@ -63,18 +63,18 @@ def add_duration(
     minutes: int = 0,
     seconds: float = 0,
     microseconds: int = 0,
-) -> datetime:
+) -> _DT:
     ...
 
 
 @overload
 def add_duration(
-    dt: date,
+    dt: _D,
     years: int = 0,
     months: int = 0,
     weeks: int = 0,
     days: int = 0,
-) -> date:
+) -> _D:
     pass
 
 
diff --git a/pendulum/interval.py b/pendulum/interval.py
index f20042bf..ed2cfe63 100644
--- a/pendulum/interval.py
+++ b/pendulum/interval.py
@@ -18,7 +18,8 @@
 from pendulum.helpers import precise_diff
 
 if TYPE_CHECKING:
-    from typing import SupportsIndex
+    from typing_extensions import Self
+    from typing_extensions import SupportsIndex
 
     from pendulum.helpers import PreciseDiff
     from pendulum.locales.locale import Locale  # noqa
@@ -35,7 +36,7 @@ def __new__(
         start: pendulum.DateTime | datetime,
         end: pendulum.DateTime | datetime,
         absolute: bool = False,
-    ) -> Interval:
+    ) -> Self:
         ...
 
     @overload
@@ -44,7 +45,7 @@ def __new__(
         start: pendulum.Date | date,
         end: pendulum.Date | date,
         absolute: bool = False,
-    ) -> Interval:
+    ) -> Self:
         ...
 
     def __new__(
@@ -52,7 +53,7 @@ def __new__(
         start: pendulum.DateTime | pendulum.Date | datetime | date,
         end: pendulum.DateTime | pendulum.Date | datetime | date,
         absolute: bool = False,
-    ) -> Interval:
+    ) -> Self:
         if (
             isinstance(start, datetime)
             and not isinstance(end, datetime)
@@ -125,7 +126,7 @@ def __new__(
 
         delta: timedelta = _end - _start  # type: ignore[operator]
 
-        return cast(Interval, super().__new__(cls, seconds=delta.total_seconds()))
+        return super().__new__(cls, seconds=delta.total_seconds())
 
     def __init__(
         self,
@@ -316,9 +317,9 @@ def range(
 
             i += amount
 
-    def as_interval(self) -> Duration:
+    def as_duration(self) -> Duration:
         """
-        Return the Period as a Duration.
+        Return the Interval as a Duration.
         """
         return Duration(seconds=self.total_seconds())
 
@@ -330,23 +331,23 @@ def __contains__(
     ) -> bool:
         return self.start <= item <= self.end
 
-    def __add__(self, other: timedelta) -> Duration:
-        return self.as_interval().__add__(other)
+    def __add__(self, other: timedelta) -> Duration:  # type: ignore[override]
+        return self.as_duration().__add__(other)
 
-    __radd__ = __add__
+    __radd__ = __add__  # type: ignore[assignment]
 
-    def __sub__(self, other: timedelta) -> Duration:
-        return self.as_interval().__sub__(other)
+    def __sub__(self, other: timedelta) -> Duration:  # type: ignore[override]
+        return self.as_duration().__sub__(other)
 
-    def __neg__(self) -> Interval:
+    def __neg__(self) -> Self:
         return self.__class__(self.end, self.start, self._absolute)
 
-    def __mul__(self, other: int | float) -> Duration:
-        return self.as_interval().__mul__(other)
+    def __mul__(self, other: int | float) -> Duration:  # type: ignore[override]
+        return self.as_duration().__mul__(other)
 
-    __rmul__ = __mul__
+    __rmul__ = __mul__  # type: ignore[assignment]
 
-    @overload
+    @overload  # type: ignore[override]
     def __floordiv__(self, other: timedelta) -> int:
         ...
 
@@ -355,11 +356,11 @@ def __floordiv__(self, other: int) -> Duration:
         ...
 
     def __floordiv__(self, other: int | timedelta) -> int | Duration:
-        return self.as_interval().__floordiv__(other)
+        return self.as_duration().__floordiv__(other)
 
     __div__ = __floordiv__  # type: ignore[assignment]
 
-    @overload
+    @overload  # type: ignore[override]
     def __truediv__(self, other: timedelta) -> float:
         ...
 
@@ -368,15 +369,15 @@ def __truediv__(self, other: float) -> Duration:
         ...
 
     def __truediv__(self, other: float | timedelta) -> Duration | float:
-        return self.as_interval().__truediv__(other)
+        return self.as_duration().__truediv__(other)
 
-    def __mod__(self, other: timedelta) -> Duration:
-        return self.as_interval().__mod__(other)
+    def __mod__(self, other: timedelta) -> Duration:  # type: ignore[override]
+        return self.as_duration().__mod__(other)
 
     def __divmod__(self, other: timedelta) -> tuple[int, Duration]:
-        return self.as_interval().__divmod__(other)
+        return self.as_duration().__divmod__(other)
 
-    def __abs__(self) -> Interval:
+    def __abs__(self) -> Self:
         return self.__class__(self.start, self.end, absolute=True)
 
     def __repr__(self) -> str:
@@ -413,7 +414,7 @@ def _getstate(
     def __reduce__(
         self,
     ) -> tuple[
-        type[Interval],
+        type[Self],
         tuple[
             pendulum.DateTime | pendulum.Date | datetime | date,
             pendulum.DateTime | pendulum.Date | datetime | date,
@@ -425,7 +426,7 @@ def __reduce__(
     def __reduce_ex__(
         self, protocol: SupportsIndex
     ) -> tuple[
-        type[Interval],
+        type[Self],
         tuple[
             pendulum.DateTime | pendulum.Date | datetime | date,
             pendulum.DateTime | pendulum.Date | datetime | date,
@@ -445,4 +446,4 @@ def __eq__(self, other: object) -> bool:
                 other._absolute,
             )
         else:
-            return self.as_interval() == other
+            return self.as_duration() == other
diff --git a/pendulum/locales/locale.py b/pendulum/locales/locale.py
index 637509a1..dba73bdf 100644
--- a/pendulum/locales/locale.py
+++ b/pendulum/locales/locale.py
@@ -4,14 +4,10 @@
 from pathlib import Path
 
 import re
-import sys
 from typing import Any, cast
 from typing import Dict
 
-if sys.version_info >= (3, 9):
-    from importlib import resources
-else:
-    import importlib_resources as resources
+from pendulum.utils._compat import resources
 
 
 class Locale:
diff --git a/pendulum/parser.py b/pendulum/parser.py
index 77900e20..1b050621 100644
--- a/pendulum/parser.py
+++ b/pendulum/parser.py
@@ -109,7 +109,7 @@ def _parse(text: str, **options: t.Any) -> Date | DateTime | Time | Duration | I
             ),
         )
 
-    if CDuration and isinstance(parsed, CDuration):
+    if CDuration and isinstance(parsed, CDuration):  # type: ignore[truthy-function]
         return pendulum.duration(
             years=parsed.years,
             months=parsed.months,
diff --git a/pendulum/parsing/__init__.py b/pendulum/parsing/__init__.py
index 81c876f5..ca465926 100644
--- a/pendulum/parsing/__init__.py
+++ b/pendulum/parsing/__init__.py
@@ -26,8 +26,8 @@
     from pendulum.parsing._iso8601 import Duration
     from pendulum.parsing._iso8601 import parse_iso8601
 except ImportError:
-    from pendulum.duration import Duration  # type: ignore[misc]
-    from pendulum.parsing.iso8601 import parse_iso8601  # type: ignore[misc]
+    from pendulum.duration import Duration  # type: ignore[assignment]
+    from pendulum.parsing.iso8601 import parse_iso8601  # type: ignore[assignment]
 
 COMMON = re.compile(
     # Date (optional)  # noqa: E800
diff --git a/pendulum/parsing/_iso8601.pyi b/pendulum/parsing/_iso8601.pyi
index b9ce5d4e..761fe6b3 100644
--- a/pendulum/parsing/_iso8601.pyi
+++ b/pendulum/parsing/_iso8601.pyi
@@ -5,7 +5,6 @@ from datetime import datetime
 from datetime import time
 
 class Duration:
-
     years: int = 0
     months: int = 0
     weeks: int = 0
diff --git a/pendulum/testing/traveller.py b/pendulum/testing/traveller.py
index 3c1d885f..8e96c5e0 100644
--- a/pendulum/testing/traveller.py
+++ b/pendulum/testing/traveller.py
@@ -9,15 +9,17 @@
 if TYPE_CHECKING:
     from types import TracebackType
 
+    from typing_extensions import Self
+
 
 class BaseTraveller:
     def __init__(self, datetime_class: type[DateTime] = DateTime) -> None:
         self._datetime_class: type[DateTime] = datetime_class
 
-    def freeze(self: BaseTraveller) -> BaseTraveller:
+    def freeze(self) -> Self:
         raise NotImplementedError()
 
-    def travel_back(self: BaseTraveller) -> BaseTraveller:
+    def travel_back(self) -> Self:
         raise NotImplementedError()
 
     def travel(
@@ -30,12 +32,23 @@ def travel(
         minutes: int = 0,
         seconds: int = 0,
         microseconds: int = 0,
-    ) -> BaseTraveller:
+    ) -> Self:
         raise NotImplementedError()
 
-    def travel_to(self, dt: DateTime) -> BaseTraveller:
+    def travel_to(self, dt: DateTime, *, freeze: bool = False) -> Self:
         raise NotImplementedError()
 
+    def __enter__(self) -> Self:
+        return self
+
+    def __exit__(
+        self,
+        exc_type: type[BaseException] | None,
+        exc_val: BaseException | None,
+        exc_tb: TracebackType,
+    ) -> None:
+        ...
+
 
 if not PYPY:
     import time_machine
@@ -48,7 +61,7 @@ def __init__(self, datetime_class: type[DateTime] = DateTime) -> None:
             self._traveller: time_machine.travel | None = None
             self._coordinates: time_machine.Coordinates | None = None
 
-        def freeze(self) -> Traveller:
+        def freeze(self) -> Self:
             if self._started:
                 cast(time_machine.Coordinates, self._coordinates).move_to(
                     self._datetime_class.now(), tick=False
@@ -58,7 +71,7 @@ def freeze(self) -> Traveller:
 
             return self
 
-        def travel_back(self) -> Traveller:
+        def travel_back(self) -> Self:
             if not self._started:
                 return self
 
@@ -81,7 +94,7 @@ def travel(
             microseconds: int = 0,
             *,
             freeze: bool = False,
-        ) -> Traveller:
+        ) -> Self:
             self._start(freeze=freeze)
 
             cast(time_machine.Coordinates, self._coordinates).move_to(
@@ -99,7 +112,7 @@ def travel(
 
             return self
 
-        def travel_to(self, dt: DateTime, *, freeze: bool = False) -> Traveller:
+        def travel_to(self, dt: DateTime, *, freeze: bool = False) -> Self:
             self._start(freeze=freeze)
 
             cast(time_machine.Coordinates, self._coordinates).move_to(dt)
@@ -119,7 +132,7 @@ def _start(self, freeze: bool = False) -> None:
 
             self._started = True
 
-        def __enter__(self) -> Traveller:
+        def __enter__(self) -> Self:
             self._start()
 
             return self
diff --git a/pendulum/time.py b/pendulum/time.py
index f979e254..6c0c3048 100644
--- a/pendulum/time.py
+++ b/pendulum/time.py
@@ -19,7 +19,9 @@
 from pendulum.mixins.default import FormattableMixin
 
 if TYPE_CHECKING:
-    from typing import Literal
+    from typing_extensions import Literal
+    from typing_extensions import Self
+    from typing_extensions import SupportsIndex
 
 
 class Time(FormattableMixin, time):
@@ -44,7 +46,7 @@ def __repr__(self) -> str:
 
     # Comparisons
 
-    def closest(self, dt1: Time | time, dt2: Time | time) -> Time:
+    def closest(self, dt1: Time | time, dt2: Time | time) -> Self:
         """
         Get the closest time from the instance.
         """
@@ -56,7 +58,7 @@ def closest(self, dt1: Time | time, dt2: Time | time) -> Time:
 
         return dt2
 
-    def farthest(self, dt1: Time | time, dt2: Time | time) -> Time:
+    def farthest(self, dt1: Time | time, dt2: Time | time) -> Self:
         """
         Get the farthest time from the instance.
         """
@@ -250,13 +252,13 @@ def diff_for_humans(
 
     def replace(
         self,
-        hour: int | None = None,
-        minute: int | None = None,
-        second: int | None = None,
-        microsecond: int | None = None,
+        hour: SupportsIndex | None = None,
+        minute: SupportsIndex | None = None,
+        second: SupportsIndex | None = None,
+        microsecond: SupportsIndex | None = None,
         tzinfo: bool | datetime.tzinfo | Literal[True] | None = True,
         fold: int = 0,
-    ) -> Time:
+    ) -> Self:
         if tzinfo is True:
             tzinfo = self.tzinfo
 
@@ -281,7 +283,7 @@ def __getnewargs__(self) -> tuple[Time]:
         return (self,)
 
     def _get_state(
-        self, protocol: int = 3
+        self, protocol: SupportsIndex = 3
     ) -> tuple[int, int, int, int, datetime.tzinfo | None]:
         tz = self.tzinfo
 
@@ -292,8 +294,8 @@ def __reduce__(
     ) -> tuple[type[Time], tuple[int, int, int, int, datetime.tzinfo | None]]:
         return self.__reduce_ex__(2)
 
-    def __reduce_ex__(  # type: ignore[override]
-        self, protocol: int
+    def __reduce_ex__(
+        self, protocol: SupportsIndex
     ) -> tuple[type[Time], tuple[int, int, int, int, datetime.tzinfo | None]]:
         return self.__class__, self._get_state(protocol)
 
diff --git a/pendulum/tz/__init__.py b/pendulum/tz/__init__.py
index 45c9855d..0ca1b328 100644
--- a/pendulum/tz/__init__.py
+++ b/pendulum/tz/__init__.py
@@ -1,6 +1,7 @@
 from __future__ import annotations
 
-import sys
+from pathlib import Path
+from typing import cast
 
 from pendulum.tz.local_timezone import get_local_timezone
 from pendulum.tz.local_timezone import set_local_timezone
@@ -8,11 +9,7 @@
 from pendulum.tz.timezone import UTC
 from pendulum.tz.timezone import FixedTimezone
 from pendulum.tz.timezone import Timezone
-
-if sys.version_info >= (3, 9):
-    from importlib import resources
-else:
-    import importlib_resources as resources
+from pendulum.utils._compat import resources
 
 PRE_TRANSITION = "pre"
 POST_TRANSITION = "post"
@@ -27,25 +24,12 @@ def timezones() -> tuple[str, ...]:
     global _timezones
 
     if _timezones is None:
-        with resources.files("tzdata").joinpath("zones").open() as f:
+        with cast(Path, resources.files("tzdata").joinpath("zones")).open() as f:
             _timezones = tuple(tz.strip() for tz in f.readlines())
 
     return _timezones
 
 
-def timezone(name: str | int) -> Timezone | FixedTimezone:
-    """
-    Return a Timezone instance given its name.
-    """
-    if isinstance(name, int):
-        return fixed_timezone(name)
-
-    if name.lower() == "utc":
-        return UTC
-
-    return Timezone(name)
-
-
 def fixed_timezone(offset: int) -> FixedTimezone:
     """
     Return a Timezone instance given its offset in seconds.
@@ -73,7 +57,6 @@ def local_timezone() -> Timezone | FixedTimezone:
     "set_local_timezone",
     "get_local_timezone",
     "test_local_timezone",
-    "timezone",
     "fixed_timezone",
     "local_timezone",
     "timezones",
diff --git a/pendulum/tz/local_timezone.py b/pendulum/tz/local_timezone.py
index 28b07ba7..0965768e 100644
--- a/pendulum/tz/local_timezone.py
+++ b/pendulum/tz/local_timezone.py
@@ -14,10 +14,7 @@
 from pendulum.tz.timezone import Timezone
 
 if sys.platform == "win32":
-    try:
-        import _winreg as winreg
-    except (ImportError, AttributeError):
-        import winreg
+    import winreg
 
 _mock_local_timezone = None
 _local_timezone = None
@@ -142,7 +139,7 @@ def _get_windows_timezone() -> Timezone:
 else:
 
     def _get_windows_timezone() -> Timezone:
-        ...
+        raise NotImplementedError
 
 
 def _get_darwin_timezone() -> Timezone:
diff --git a/pendulum/tz/timezone.py b/pendulum/tz/timezone.py
index e7e84af9..9befc004 100644
--- a/pendulum/tz/timezone.py
+++ b/pendulum/tz/timezone.py
@@ -1,9 +1,12 @@
+# mypy: no-warn-redundant-casts
 from __future__ import annotations
 
-import datetime as datetime_
+import datetime as _datetime
 
 from abc import ABC
 from abc import abstractmethod
+from typing import TYPE_CHECKING
+from typing import TypeVar
 from typing import cast
 
 from pendulum.tz.exceptions import AmbiguousTime
@@ -11,11 +14,17 @@
 from pendulum.tz.exceptions import NonExistingTime
 from pendulum.utils._compat import zoneinfo
 
+if TYPE_CHECKING:
+    from typing_extensions import Self
+
 POST_TRANSITION = "post"
 PRE_TRANSITION = "pre"
 TRANSITION_ERROR = "error"
 
 
+_DT = TypeVar("_DT", bound=_datetime.datetime)
+
+
 class PendulumTimezone(ABC):
     @property
     @abstractmethod
@@ -23,9 +32,7 @@ def name(self) -> str:
         raise NotImplementedError
 
     @abstractmethod
-    def convert(
-        self, dt: datetime_.datetime, raise_on_unknown_times: bool = False
-    ) -> datetime_.datetime:
+    def convert(self, dt: _DT, raise_on_unknown_times: bool = False) -> _DT:
         raise NotImplementedError
 
     @abstractmethod
@@ -38,7 +45,7 @@ def datetime(
         minute: int = 0,
         second: int = 0,
         microsecond: int = 0,
-    ) -> datetime_.datetime:
+    ) -> _datetime.datetime:
         raise NotImplementedError
 
 
@@ -52,7 +59,7 @@ class Timezone(zoneinfo.ZoneInfo, PendulumTimezone):
     >>> tz = Timezone('Europe/Paris')
     """
 
-    def __new__(cls, key: str) -> Timezone:
+    def __new__(cls, key: str) -> Self:
         try:
             return super().__new__(cls, key)  # type: ignore[call-arg]
         except zoneinfo.ZoneInfoNotFoundError:
@@ -62,9 +69,7 @@ def __new__(cls, key: str) -> Timezone:
     def name(self) -> str:
         return self.key
 
-    def convert(
-        self, dt: datetime_.datetime, raise_on_unknown_times: bool = False
-    ) -> datetime_.datetime:
+    def convert(self, dt: _DT, raise_on_unknown_times: bool = False) -> _DT:
         """
         Converts a datetime in the current timezone.
 
@@ -85,6 +90,7 @@ def convert(
         >>> in_new_york.isoformat()
         '2013-03-30T21:30:00-04:00'
         """
+
         if dt.tzinfo is None:
             # Technically, utcoffset() can return None, but none of the zone information
             # in tzdata sets _tti_before to None. This can be checked with the following
@@ -98,11 +104,11 @@ def convert(
             # >>>         print(tzname)
 
             offset_before = cast(
-                datetime_.timedelta,
+                _datetime.timedelta,
                 (self.utcoffset(dt.replace(fold=0)) if dt.fold else self.utcoffset(dt)),
             )
             offset_after = cast(
-                datetime_.timedelta,
+                _datetime.timedelta,
                 (self.utcoffset(dt) if dt.fold else self.utcoffset(dt.replace(fold=1))),
             )
 
@@ -111,10 +117,14 @@ def convert(
                 if raise_on_unknown_times:
                     raise NonExistingTime(dt)
 
-                dt += (
-                    (offset_after - offset_before)
-                    if dt.fold
-                    else (offset_before - offset_after)
+                dt = cast(
+                    _DT,
+                    dt
+                    + (
+                        (offset_after - offset_before)
+                        if dt.fold
+                        else (offset_before - offset_after)
+                    ),
                 )
             elif offset_before > offset_after and raise_on_unknown_times:
                 # Repeated time
@@ -122,7 +132,7 @@ def convert(
 
             return dt.replace(tzinfo=self)
 
-        return dt.astimezone(self)
+        return cast(_DT, dt.astimezone(self))
 
     def datetime(
         self,
@@ -133,12 +143,12 @@ def datetime(
         minute: int = 0,
         second: int = 0,
         microsecond: int = 0,
-    ) -> datetime_.datetime:
+    ) -> _datetime.datetime:
         """
         Return a normalized datetime for the current timezone.
         """
         return self.convert(
-            datetime_.datetime(
+            _datetime.datetime(
                 year, month, day, hour, minute, second, microsecond, fold=1
             )
         )
@@ -147,7 +157,7 @@ def __repr__(self) -> str:
         return f"{self.__class__.__name__}('{self.name}')"
 
 
-class FixedTimezone(datetime_.tzinfo, PendulumTimezone):
+class FixedTimezone(_datetime.tzinfo, PendulumTimezone):
     def __init__(self, offset: int, name: str | None = None) -> None:
         sign = "-" if offset < 0 else "+"
 
@@ -159,15 +169,13 @@ def __init__(self, offset: int, name: str | None = None) -> None:
 
         self._name = name
         self._offset = offset
-        self._utcoffset = datetime_.timedelta(seconds=offset)
+        self._utcoffset = _datetime.timedelta(seconds=offset)
 
     @property
     def name(self) -> str:
         return self._name
 
-    def convert(
-        self, dt: datetime_.datetime, raise_on_unknown_times: bool = False
-    ) -> datetime_.datetime:
+    def convert(self, dt: _DT, raise_on_unknown_times: bool = False) -> _DT:
         if dt.tzinfo is None:
             return dt.__class__(
                 dt.year,
@@ -181,7 +189,7 @@ def convert(
                 fold=0,
             )
 
-        return dt.astimezone(self)
+        return cast(_DT, dt.astimezone(self))
 
     def datetime(
         self,
@@ -192,9 +200,9 @@ def datetime(
         minute: int = 0,
         second: int = 0,
         microsecond: int = 0,
-    ) -> datetime_.datetime:
+    ) -> _datetime.datetime:
         return self.convert(
-            datetime_.datetime(
+            _datetime.datetime(
                 year, month, day, hour, minute, second, microsecond, fold=1
             )
         )
@@ -203,17 +211,17 @@ def datetime(
     def offset(self) -> int:
         return self._offset
 
-    def utcoffset(self, dt: datetime_.datetime | None) -> datetime_.timedelta:
+    def utcoffset(self, dt: _datetime.datetime | None) -> _datetime.timedelta:
         return self._utcoffset
 
-    def dst(self, dt: datetime_.datetime | None) -> datetime_.timedelta:
-        return datetime_.timedelta()
+    def dst(self, dt: _datetime.datetime | None) -> _datetime.timedelta:
+        return _datetime.timedelta()
 
-    def fromutc(self, dt: datetime_.datetime) -> datetime_.datetime:
+    def fromutc(self, dt: _datetime.datetime) -> _datetime.datetime:
         # Use the stdlib datetime's add method to avoid infinite recursion
-        return (datetime_.datetime.__add__(dt, self._utcoffset)).replace(tzinfo=self)
+        return (_datetime.datetime.__add__(dt, self._utcoffset)).replace(tzinfo=self)
 
-    def tzname(self, dt: datetime_.datetime | None) -> str | None:
+    def tzname(self, dt: _datetime.datetime | None) -> str | None:
         return self._name
 
     def __getinitargs__(self) -> tuple[int, str]:
diff --git a/pendulum/utils/_compat.py b/pendulum/utils/_compat.py
index 81b0a308..5ac51bdd 100644
--- a/pendulum/utils/_compat.py
+++ b/pendulum/utils/_compat.py
@@ -2,12 +2,13 @@
 
 import sys
 
+from pendulum.utils import _zoneinfo as zoneinfo
+
 PYPY = hasattr(sys, "pypy_version_info")
-PY38 = sys.version_info[:2] >= (3, 8)
 
 if sys.version_info < (3, 9):
-    from backports import zoneinfo
+    import importlib_resources as resources
 else:
-    import zoneinfo
+    from importlib import resources
 
-__all__ = ["zoneinfo"]
+__all__ = ["resources", "zoneinfo"]
diff --git a/pendulum/utils/_zoneinfo.py b/pendulum/utils/_zoneinfo.py
new file mode 100644
index 00000000..8f87b795
--- /dev/null
+++ b/pendulum/utils/_zoneinfo.py
@@ -0,0 +1,79 @@
+from __future__ import annotations
+
+import sys
+
+from typing import TYPE_CHECKING
+
+if sys.version_info < (3, 9):
+    # Works around https://github.com/pganssle/zoneinfo/issues/125
+    from backports.zoneinfo import TZPATH
+    from backports.zoneinfo import InvalidTZPathWarning
+    from backports.zoneinfo import ZoneInfoNotFoundError
+    from backports.zoneinfo import available_timezones
+    from backports.zoneinfo import reset_tzpath
+
+    if TYPE_CHECKING:
+        from collections.abc import Iterable
+        from datetime import datetime
+        from datetime import timedelta
+        from datetime import tzinfo
+        from typing import Any
+        from typing import Protocol
+
+        from typing_extensions import Self
+
+        class _IOBytes(Protocol):
+            def read(self, __size: int) -> bytes:
+                ...
+
+            def seek(self, __size: int, __whence: int = ...) -> Any:
+                ...
+
+        class ZoneInfo(tzinfo):
+            @property
+            def key(self) -> str:
+                ...
+
+            def __init__(self, key: str) -> None:
+                ...
+
+            @classmethod
+            def no_cache(cls, key: str) -> Self:
+                ...
+
+            @classmethod
+            def from_file(cls, __fobj: _IOBytes, key: str | None = ...) -> Self:
+                ...
+
+            @classmethod
+            def clear_cache(cls, *, only_keys: Iterable[str] | None = ...) -> None:
+                ...
+
+            def tzname(self, __dt: datetime | None) -> str | None:
+                ...
+
+            def utcoffset(self, __dt: datetime | None) -> timedelta | None:
+                ...
+
+            def dst(self, __dt: datetime | None) -> timedelta | None:
+                ...
+
+    else:
+        from backports.zoneinfo import ZoneInfo
+
+else:
+    from zoneinfo import TZPATH
+    from zoneinfo import InvalidTZPathWarning
+    from zoneinfo import ZoneInfo
+    from zoneinfo import ZoneInfoNotFoundError
+    from zoneinfo import available_timezones
+    from zoneinfo import reset_tzpath
+
+__all__ = [
+    "ZoneInfo",
+    "reset_tzpath",
+    "available_timezones",
+    "TZPATH",
+    "ZoneInfoNotFoundError",
+    "InvalidTZPathWarning",
+]
diff --git a/poetry.lock b/poetry.lock
index 22d75ed1..96da94cc 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,10 +1,9 @@
-# This file is automatically @generated by Poetry and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.5.1 and should not be changed by hand.
 
 [[package]]
 name = "atomicwrites"
 version = "1.4.1"
 description = "Atomic file writes."
-category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 files = [
@@ -15,7 +14,6 @@ files = [
 name = "attrs"
 version = "22.1.0"
 description = "Classes Without Boilerplate"
-category = "dev"
 optional = false
 python-versions = ">=3.5"
 files = [
@@ -33,7 +31,6 @@ tests-no-zope = ["cloudpickle", "coverage[toml] (>=5.0.2)", "hypothesis", "mypy
 name = "babel"
 version = "2.10.3"
 description = "Internationalization utilities"
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -48,7 +45,6 @@ pytz = ">=2015.7"
 name = "backports-zoneinfo"
 version = "0.2.1"
 description = "Backport of the standard library zoneinfo module"
-category = "main"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -77,7 +73,6 @@ tzdata = ["tzdata"]
 name = "black"
 version = "22.6.0"
 description = "The uncompromising code formatter."
-category = "dev"
 optional = false
 python-versions = ">=3.6.2"
 files = [
@@ -125,7 +120,6 @@ uvloop = ["uvloop (>=0.15.2)"]
 name = "cffi"
 version = "1.15.1"
 description = "Foreign Function Interface for Python calling C code."
-category = "dev"
 optional = false
 python-versions = "*"
 files = [
@@ -202,7 +196,6 @@ pycparser = "*"
 name = "cfgv"
 version = "3.3.1"
 description = "Validate configuration and produce human readable error messages."
-category = "dev"
 optional = false
 python-versions = ">=3.6.1"
 files = [
@@ -214,7 +207,6 @@ files = [
 name = "cleo"
 version = "2.0.1"
 description = "Cleo allows you to create beautiful and testable command-line interfaces."
-category = "dev"
 optional = false
 python-versions = ">=3.7,<4.0"
 files = [
@@ -230,7 +222,6 @@ rapidfuzz = ">=2.2.0,<3.0.0"
 name = "click"
 version = "8.1.3"
 description = "Composable command line interface toolkit"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -246,7 +237,6 @@ importlib-metadata = {version = "*", markers = "python_version < \"3.8\""}
 name = "colorama"
 version = "0.4.5"
 description = "Cross-platform colored terminal text."
-category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 files = [
@@ -258,7 +248,6 @@ files = [
 name = "crashtest"
 version = "0.4.1"
 description = "Manage Python errors with ease"
-category = "dev"
 optional = false
 python-versions = ">=3.7,<4.0"
 files = [
@@ -270,7 +259,6 @@ files = [
 name = "distlib"
 version = "0.3.5"
 description = "Distribution utilities"
-category = "dev"
 optional = false
 python-versions = "*"
 files = [
@@ -282,7 +270,6 @@ files = [
 name = "filelock"
 version = "3.7.1"
 description = "A platform independent file lock."
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -298,7 +285,6 @@ testing = ["covdefaults (>=1.2.0)", "coverage (>=4)", "pytest (>=4)", "pytest-co
 name = "ghp-import"
 version = "2.1.0"
 description = "Copy your docs directly to the gh-pages branch."
-category = "dev"
 optional = false
 python-versions = "*"
 files = [
@@ -316,7 +302,6 @@ dev = ["flake8", "markdown", "twine", "wheel"]
 name = "identify"
 version = "2.5.3"
 description = "File identification library for Python"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -331,7 +316,6 @@ license = ["ukkonen"]
 name = "importlib-metadata"
 version = "4.12.0"
 description = "Read metadata from Python packages"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -352,7 +336,6 @@ testing = ["flufl.flake8", "importlib-resources (>=1.3)", "packaging", "pyfakefs
 name = "importlib-resources"
 version = "5.9.0"
 description = "Read resources from Python packages"
-category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -371,7 +354,6 @@ testing = ["pytest (>=6)", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=2.4)",
 name = "iniconfig"
 version = "1.1.1"
 description = "iniconfig: brain-dead simple config-ini parsing"
-category = "dev"
 optional = false
 python-versions = "*"
 files = [
@@ -383,7 +365,6 @@ files = [
 name = "isort"
 version = "5.10.1"
 description = "A Python utility / library to sort Python imports."
-category = "dev"
 optional = false
 python-versions = ">=3.6.1,<4.0"
 files = [
@@ -401,7 +382,6 @@ requirements-deprecated-finder = ["pip-api", "pipreqs"]
 name = "jinja2"
 version = "3.1.2"
 description = "A very fast and expressive template engine."
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -419,7 +399,6 @@ i18n = ["Babel (>=2.7)"]
 name = "markdown"
 version = "3.4.1"
 description = "Python implementation of Markdown."
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -437,7 +416,6 @@ testing = ["coverage", "pyyaml"]
 name = "markdown-include"
 version = "0.5.1"
 description = "This is an extension to Python-Markdown which provides an \"include\" function, similar to that found in LaTeX (and also the C pre-processor and Fortran). I originally wrote it for my FORD Fortran auto-documentation generator."
-category = "dev"
 optional = false
 python-versions = "*"
 files = [
@@ -451,7 +429,6 @@ markdown = "*"
 name = "markupsafe"
 version = "2.1.1"
 description = "Safely add untrusted strings to HTML/XML markup."
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -501,7 +478,6 @@ files = [
 name = "mergedeep"
 version = "1.3.4"
 description = "A deep merge function for 🐍."
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -513,7 +489,6 @@ files = [
 name = "meson"
 version = "0.63.2"
 description = "A high performance build system"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -530,7 +505,6 @@ typing = ["mypy", "typing-extensions"]
 name = "mkdocs"
 version = "1.3.0"
 description = "Project documentation with Markdown."
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -553,23 +527,68 @@ watchdog = ">=2.0"
 [package.extras]
 i18n = ["babel (>=2.9.0)"]
 
+[[package]]
+name = "mypy"
+version = "1.3.0"
+description = "Optional static typing for Python"
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "mypy-1.3.0-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:c1eb485cea53f4f5284e5baf92902cd0088b24984f4209e25981cc359d64448d"},
+    {file = "mypy-1.3.0-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:4c99c3ecf223cf2952638da9cd82793d8f3c0c5fa8b6ae2b2d9ed1e1ff51ba85"},
+    {file = "mypy-1.3.0-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:550a8b3a19bb6589679a7c3c31f64312e7ff482a816c96e0cecec9ad3a7564dd"},
+    {file = "mypy-1.3.0-cp310-cp310-musllinux_1_1_x86_64.whl", hash = "sha256:cbc07246253b9e3d7d74c9ff948cd0fd7a71afcc2b77c7f0a59c26e9395cb152"},
+    {file = "mypy-1.3.0-cp310-cp310-win_amd64.whl", hash = "sha256:a22435632710a4fcf8acf86cbd0d69f68ac389a3892cb23fbad176d1cddaf228"},
+    {file = "mypy-1.3.0-cp311-cp311-macosx_10_9_x86_64.whl", hash = "sha256:6e33bb8b2613614a33dff70565f4c803f889ebd2f859466e42b46e1df76018dd"},
+    {file = "mypy-1.3.0-cp311-cp311-macosx_11_0_arm64.whl", hash = "sha256:7d23370d2a6b7a71dc65d1266f9a34e4cde9e8e21511322415db4b26f46f6b8c"},
+    {file = "mypy-1.3.0-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:658fe7b674769a0770d4b26cb4d6f005e88a442fe82446f020be8e5f5efb2fae"},
+    {file = "mypy-1.3.0-cp311-cp311-musllinux_1_1_x86_64.whl", hash = "sha256:6e42d29e324cdda61daaec2336c42512e59c7c375340bd202efa1fe0f7b8f8ca"},
+    {file = "mypy-1.3.0-cp311-cp311-win_amd64.whl", hash = "sha256:d0b6c62206e04061e27009481cb0ec966f7d6172b5b936f3ead3d74f29fe3dcf"},
+    {file = "mypy-1.3.0-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:76ec771e2342f1b558c36d49900dfe81d140361dd0d2df6cd71b3db1be155409"},
+    {file = "mypy-1.3.0-cp37-cp37m-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:ebc95f8386314272bbc817026f8ce8f4f0d2ef7ae44f947c4664efac9adec929"},
+    {file = "mypy-1.3.0-cp37-cp37m-musllinux_1_1_x86_64.whl", hash = "sha256:faff86aa10c1aa4a10e1a301de160f3d8fc8703b88c7e98de46b531ff1276a9a"},
+    {file = "mypy-1.3.0-cp37-cp37m-win_amd64.whl", hash = "sha256:8c5979d0deb27e0f4479bee18ea0f83732a893e81b78e62e2dda3e7e518c92ee"},
+    {file = "mypy-1.3.0-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:c5d2cc54175bab47011b09688b418db71403aefad07cbcd62d44010543fc143f"},
+    {file = "mypy-1.3.0-cp38-cp38-macosx_11_0_arm64.whl", hash = "sha256:87df44954c31d86df96c8bd6e80dfcd773473e877ac6176a8e29898bfb3501cb"},
+    {file = "mypy-1.3.0-cp38-cp38-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:473117e310febe632ddf10e745a355714e771ffe534f06db40702775056614c4"},
+    {file = "mypy-1.3.0-cp38-cp38-musllinux_1_1_x86_64.whl", hash = "sha256:74bc9b6e0e79808bf8678d7678b2ae3736ea72d56eede3820bd3849823e7f305"},
+    {file = "mypy-1.3.0-cp38-cp38-win_amd64.whl", hash = "sha256:44797d031a41516fcf5cbfa652265bb994e53e51994c1bd649ffcd0c3a7eccbf"},
+    {file = "mypy-1.3.0-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:ddae0f39ca146972ff6bb4399f3b2943884a774b8771ea0a8f50e971f5ea5ba8"},
+    {file = "mypy-1.3.0-cp39-cp39-macosx_11_0_arm64.whl", hash = "sha256:1c4c42c60a8103ead4c1c060ac3cdd3ff01e18fddce6f1016e08939647a0e703"},
+    {file = "mypy-1.3.0-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:e86c2c6852f62f8f2b24cb7a613ebe8e0c7dc1402c61d36a609174f63e0ff017"},
+    {file = "mypy-1.3.0-cp39-cp39-musllinux_1_1_x86_64.whl", hash = "sha256:f9dca1e257d4cc129517779226753dbefb4f2266c4eaad610fc15c6a7e14283e"},
+    {file = "mypy-1.3.0-cp39-cp39-win_amd64.whl", hash = "sha256:95d8d31a7713510685b05fbb18d6ac287a56c8f6554d88c19e73f724a445448a"},
+    {file = "mypy-1.3.0-py3-none-any.whl", hash = "sha256:a8763e72d5d9574d45ce5881962bc8e9046bf7b375b0abf031f3e6811732a897"},
+    {file = "mypy-1.3.0.tar.gz", hash = "sha256:e1f4d16e296f5135624b34e8fb741eb0eadedca90862405b1f1fde2040b9bd11"},
+]
+
+[package.dependencies]
+mypy-extensions = ">=1.0.0"
+tomli = {version = ">=1.1.0", markers = "python_version < \"3.11\""}
+typed-ast = {version = ">=1.4.0,<2", markers = "python_version < \"3.8\""}
+typing-extensions = ">=3.10"
+
+[package.extras]
+dmypy = ["psutil (>=4.0)"]
+install-types = ["pip"]
+python2 = ["typed-ast (>=1.4.0,<2)"]
+reports = ["lxml"]
+
 [[package]]
 name = "mypy-extensions"
-version = "0.4.3"
-description = "Experimental type system extensions for programs checked with the mypy typechecker."
-category = "dev"
+version = "1.0.0"
+description = "Type system extensions for programs checked with the mypy type checker."
 optional = false
-python-versions = "*"
+python-versions = ">=3.5"
 files = [
-    {file = "mypy_extensions-0.4.3-py2.py3-none-any.whl", hash = "sha256:090fedd75945a69ae91ce1303b5824f428daf5a028d2f6ab8a299250a846f15d"},
-    {file = "mypy_extensions-0.4.3.tar.gz", hash = "sha256:2d82818f5bb3e369420cb3c4060a7970edba416647068eb4c5343488a6c604a8"},
+    {file = "mypy_extensions-1.0.0-py3-none-any.whl", hash = "sha256:4392f6c0eb8a5668a69e23d168ffa70f0be9ccfd32b5cc2d26a34ae5b844552d"},
+    {file = "mypy_extensions-1.0.0.tar.gz", hash = "sha256:75dbf8955dc00442a438fc4d0666508a9a97b6bd41aa2f0ffe9d2f2725af0782"},
 ]
 
 [[package]]
 name = "ninja"
 version = "1.10.2.3"
 description = "Ninja is a small build system with a focus on speed"
-category = "dev"
 optional = false
 python-versions = "*"
 files = [
@@ -596,7 +615,6 @@ test = ["codecov (>=2.0.5)", "coverage (>=4.2)", "flake8 (>=3.0.4)", "pytest (>=
 name = "nodeenv"
 version = "1.7.0"
 description = "Node.js virtual environment builder"
-category = "dev"
 optional = false
 python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,!=3.6.*"
 files = [
@@ -611,7 +629,6 @@ setuptools = "*"
 name = "packaging"
 version = "21.3"
 description = "Core utilities for Python packages"
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -626,7 +643,6 @@ pyparsing = ">=2.0.2,<3.0.5 || >3.0.5"
 name = "pathspec"
 version = "0.9.0"
 description = "Utility library for gitignore style pattern matching of file paths."
-category = "dev"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
 files = [
@@ -638,7 +654,6 @@ files = [
 name = "platformdirs"
 version = "2.5.2"
 description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -654,7 +669,6 @@ test = ["appdirs (==1.4.4)", "pytest (>=6)", "pytest-cov (>=2.7)", "pytest-mock
 name = "pluggy"
 version = "1.0.0"
 description = "plugin and hook calling mechanisms for python"
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -673,7 +687,6 @@ testing = ["pytest", "pytest-benchmark"]
 name = "pre-commit"
 version = "2.20.0"
 description = "A framework for managing and maintaining multi-language pre-commit hooks."
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -694,7 +707,6 @@ virtualenv = ">=20.0.8"
 name = "py"
 version = "1.11.0"
 description = "library with cross-python path, ini-parsing, io, code, log facilities"
-category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 files = [
@@ -706,7 +718,6 @@ files = [
 name = "py-cpuinfo"
 version = "9.0.0"
 description = "Get CPU info with pure Python"
-category = "dev"
 optional = false
 python-versions = "*"
 files = [
@@ -718,7 +729,6 @@ files = [
 name = "pycparser"
 version = "2.21"
 description = "C parser in Python"
-category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 files = [
@@ -730,7 +740,6 @@ files = [
 name = "pygments"
 version = "2.12.0"
 description = "Pygments is a syntax highlighting package written in Python."
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -742,7 +751,6 @@ files = [
 name = "pymdown-extensions"
 version = "6.3"
 description = "Extension pack for Python Markdown."
-category = "dev"
 optional = false
 python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*"
 files = [
@@ -757,7 +765,6 @@ Markdown = ">=3.2"
 name = "pyparsing"
 version = "3.0.9"
 description = "pyparsing module - Classes and methods to define and execute parsing grammars"
-category = "dev"
 optional = false
 python-versions = ">=3.6.8"
 files = [
@@ -772,7 +779,6 @@ diagrams = ["jinja2", "railroad-diagrams"]
 name = "pytest"
 version = "7.1.2"
 description = "pytest: simple powerful testing with Python"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -798,7 +804,6 @@ testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "pygments (>=2.
 name = "pytest-benchmark"
 version = "4.0.0"
 description = "A ``pytest`` fixture for benchmarking code. It will group the tests into rounds that are calibrated to the chosen timer."
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -819,7 +824,6 @@ histogram = ["pygal", "pygaljs"]
 name = "pytest-codspeed"
 version = "1.2.2"
 description = "Pytest plugin to create CodSpeed benchmarks"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -839,7 +843,6 @@ dev = ["black (>=22.3.0,<22.4.0)", "flake8 (>=5.0.4,<5.1.0)", "hatchling (>=1.11
 name = "python-dateutil"
 version = "2.8.2"
 description = "Extensions to the standard Python datetime module"
-category = "main"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,>=2.7"
 files = [
@@ -854,7 +857,6 @@ six = ">=1.5"
 name = "pytz"
 version = "2022.1"
 description = "World timezone definitions, modern and historical"
-category = "dev"
 optional = false
 python-versions = "*"
 files = [
@@ -866,7 +868,6 @@ files = [
 name = "pyyaml"
 version = "6.0"
 description = "YAML parser and emitter for Python"
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -916,7 +917,6 @@ files = [
 name = "pyyaml-env-tag"
 version = "0.1"
 description = "A custom YAML tag for referencing environment variables in YAML files. "
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -931,7 +931,6 @@ pyyaml = "*"
 name = "rapidfuzz"
 version = "2.13.7"
 description = "rapid fuzzy string matching"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -1033,7 +1032,6 @@ full = ["numpy"]
 name = "setuptools"
 version = "63.4.1"
 description = "Easily download, build, install, upgrade, and uninstall Python packages"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -1050,7 +1048,6 @@ testing-integration = ["build[virtualenv]", "filelock (>=3.4.0)", "jaraco.envs (
 name = "six"
 version = "1.16.0"
 description = "Python 2 and 3 compatibility utilities"
-category = "main"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
 files = [
@@ -1062,7 +1059,6 @@ files = [
 name = "time-machine"
 version = "2.7.1"
 description = "Travel through time in your tests."
-category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -1115,7 +1111,6 @@ python-dateutil = "*"
 name = "toml"
 version = "0.10.2"
 description = "Python Library for Tom's Obvious, Minimal Language"
-category = "dev"
 optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
 files = [
@@ -1127,7 +1122,6 @@ files = [
 name = "tomli"
 version = "2.0.1"
 description = "A lil' TOML parser"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -1139,7 +1133,6 @@ files = [
 name = "tox"
 version = "3.25.1"
 description = "tox is a generic virtualenv management and test command line tool"
-category = "dev"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
 files = [
@@ -1166,7 +1159,6 @@ testing = ["flaky (>=3.4.0)", "freezegun (>=0.3.11)", "pathlib2 (>=2.3.3)", "psu
 name = "typed-ast"
 version = "1.5.4"
 description = "a fork of Python 2 and 3 ast modules with type comment support"
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -1197,34 +1189,31 @@ files = [
 ]
 
 [[package]]
-name = "types-backports"
-version = "0.1.3"
-description = "Typing stubs for backports"
-category = "dev"
+name = "types-python-dateutil"
+version = "2.8.19"
+description = "Typing stubs for python-dateutil"
 optional = false
 python-versions = "*"
 files = [
-    {file = "types-backports-0.1.3.tar.gz", hash = "sha256:f4b7206c073df88d6200891e3d27506185fd60cda66fb289737b2fa92c0010cf"},
-    {file = "types_backports-0.1.3-py2.py3-none-any.whl", hash = "sha256:dafcd61848081503e738a7768872d1dd6c018401b4d2a1cfb608ea87ec9864b9"},
+    {file = "types-python-dateutil-2.8.19.tar.gz", hash = "sha256:bfd3eb39c7253aea4ba23b10f69b017d30b013662bb4be4ab48b20bbd763f309"},
+    {file = "types_python_dateutil-2.8.19-py3-none-any.whl", hash = "sha256:6284df1e4783d8fc6e587f0317a81333856b872a6669a282f8a325342bce7fa8"},
 ]
 
 [[package]]
-name = "types-python-dateutil"
-version = "2.8.19"
-description = "Typing stubs for python-dateutil"
-category = "dev"
+name = "types-pytz"
+version = "2022.7.1.2"
+description = "Typing stubs for pytz"
 optional = false
 python-versions = "*"
 files = [
-    {file = "types-python-dateutil-2.8.19.tar.gz", hash = "sha256:bfd3eb39c7253aea4ba23b10f69b017d30b013662bb4be4ab48b20bbd763f309"},
-    {file = "types_python_dateutil-2.8.19-py3-none-any.whl", hash = "sha256:6284df1e4783d8fc6e587f0317a81333856b872a6669a282f8a325342bce7fa8"},
+    {file = "types-pytz-2022.7.1.2.tar.gz", hash = "sha256:487d3e8e9f4071eec8081746d53fa982bbc05812e719dcbf2ebf3d55a1a4cd28"},
+    {file = "types_pytz-2022.7.1.2-py3-none-any.whl", hash = "sha256:40ca448a928d566f7d44ddfde0066e384f7ffbd4da2778e42a4570eaca572446"},
 ]
 
 [[package]]
 name = "typing-extensions"
 version = "4.3.0"
 description = "Backported and Experimental Type Hints for Python 3.7+"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -1236,7 +1225,6 @@ files = [
 name = "tzdata"
 version = "2022.1"
 description = "Provider of IANA time zone data"
-category = "main"
 optional = false
 python-versions = ">=2"
 files = [
@@ -1248,7 +1236,6 @@ files = [
 name = "virtualenv"
 version = "20.16.3"
 description = "Virtual Python Environment builder"
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -1270,7 +1257,6 @@ testing = ["coverage (>=6.2)", "coverage-enable-subprocess (>=1)", "flaky (>=3.7
 name = "watchdog"
 version = "2.1.9"
 description = "Filesystem events monitoring"
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -1308,7 +1294,6 @@ watchmedo = ["PyYAML (>=3.10)"]
 name = "zipp"
 version = "3.8.1"
 description = "Backport of pathlib-compatible object wrapper for zip files"
-category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -1323,4 +1308,4 @@ testing = ["func-timeout", "jaraco.itertools", "pytest (>=6)", "pytest-black (>=
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.7"
-content-hash = "c8ac8cbd6ca3a6f7be217c160e93b23f7bf89056ca9cd1b66febc70c4c809e10"
+content-hash = "39af764fa2788e55fa847cb48f19c948c043b37bb52546ab5535d6953387200f"
diff --git a/pyproject.toml b/pyproject.toml
index 63cfac55..3aa14314 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -49,8 +49,11 @@ markdown-include = "^0.5.1"
 black = { version = "^22.6.0", markers = "implementation_name != 'pypy'" }
 isort = "^5.10.1"
 pre-commit = "^2.20.0"
-types-backports = "^0.1.3"
+
+[tool.poetry.group.typing.dependencies]
+mypy = "^1.3.0"
 types-python-dateutil = "^2.8.19"
+types-pytz = ">=2022.7.1.2"
 
 [tool.poetry.group.dev.dependencies]
 babel = "^2.10.3"
@@ -97,6 +100,9 @@ strict = true
 files = "pendulum, tests"
 show_error_codes = true
 pretty = true
+exclude = [
+    "^build\\.py$"
+]
 
 # The following whitelist is used to allow for incremental adoption
 # of Mypy. Modules should be removed from this whitelist as and when
@@ -106,9 +112,6 @@ pretty = true
 [[tool.mypy.overrides]]
 module = [
     "pendulum.mixins.default",
-    "tests.conftest",
-    "tests.test_helpers",
-    "tests.test_main",
     "tests.test_parsing",
     "tests.date.test_add",
     "tests.date.test_behavior",
diff --git a/tests/benchmarks/test_format.py b/tests/benchmarks/test_format.py
index 6b3964e1..41e67828 100644
--- a/tests/benchmarks/test_format.py
+++ b/tests/benchmarks/test_format.py
@@ -3,7 +3,7 @@
 from typing import TYPE_CHECKING
 
 if TYPE_CHECKING:
-    from pytest_benchmark.fixture import BenchmarkFixture
+    from pytest_benchmark.fixture import BenchmarkFixture  # type: ignore[import]
 
 import pendulum
 
diff --git a/tests/conftest.py b/tests/conftest.py
index 060e9518..73b66db9 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,12 +1,17 @@
 from __future__ import annotations
 
+from typing import TYPE_CHECKING
+
 import pytest
 
 import pendulum
 
+if TYPE_CHECKING:
+    from collections.abc import Iterator
+
 
 @pytest.fixture(autouse=True)
-def setup():
+def setup() -> Iterator[None]:
     pendulum.set_local_timezone(pendulum.timezone("America/Toronto"))
 
     yield
@@ -18,8 +23,15 @@ def setup():
 
 
 def assert_datetime(
-    d, year, month, day, hour=None, minute=None, second=None, microsecond=None
-):
+    d: pendulum.DateTime,
+    year: int,
+    month: int,
+    day: int,
+    hour: int | None = None,
+    minute: int | None = None,
+    second: int | None = None,
+    microsecond: int | None = None,
+) -> None:
     assert year == d.year
     assert month == d.month
     assert day == d.day
@@ -37,13 +49,19 @@ def assert_datetime(
         assert microsecond == d.microsecond
 
 
-def assert_date(d, year, month, day):
+def assert_date(d: pendulum.Date, year: int, month: int, day: int) -> None:
     assert year == d.year
     assert month == d.month
     assert day == d.day
 
 
-def assert_time(t, hour, minute, second, microsecond=None):
+def assert_time(
+    t: pendulum.Time,
+    hour: int,
+    minute: int,
+    second: int,
+    microsecond: int | None = None,
+) -> None:
     assert hour == t.hour
     assert minute == t.minute
     assert second == t.second
@@ -53,15 +71,15 @@ def assert_time(t, hour, minute, second, microsecond=None):
 
 
 def assert_duration(
-    dur,
-    years=None,
-    months=None,
-    weeks=None,
-    days=None,
-    hours=None,
-    minutes=None,
-    seconds=None,
-    microseconds=None,
+    dur: pendulum.Duration,
+    years: int | None = None,
+    months: int | None = None,
+    weeks: int | None = None,
+    days: int | None = None,
+    hours: int | None = None,
+    minutes: int | None = None,
+    seconds: int | None = None,
+    microseconds: int | None = None,
 ) -> None:
     expected = {}
     actual = {}
diff --git a/tests/datetime/test_construct.py b/tests/datetime/test_construct.py
index 9488c08b..9435413b 100644
--- a/tests/datetime/test_construct.py
+++ b/tests/datetime/test_construct.py
@@ -12,7 +12,7 @@
 import pendulum
 
 from pendulum import DateTime
-from pendulum.tz import timezone
+from pendulum import timezone
 from pendulum.utils._compat import PYPY
 from tests.conftest import assert_datetime
 
diff --git a/tests/datetime/test_getters.py b/tests/datetime/test_getters.py
index 50746234..9adfc189 100644
--- a/tests/datetime/test_getters.py
+++ b/tests/datetime/test_getters.py
@@ -7,7 +7,7 @@
 import pendulum
 
 from pendulum import DateTime
-from pendulum.tz import timezone
+from pendulum import timezone
 from tests.conftest import assert_date
 from tests.conftest import assert_time
 
diff --git a/tests/test_helpers.py b/tests/test_helpers.py
index e3daeac5..7756a063 100644
--- a/tests/test_helpers.py
+++ b/tests/test_helpers.py
@@ -8,14 +8,22 @@
 import pendulum
 
 from pendulum import timezone
+from pendulum.helpers import PreciseDiff
 from pendulum.helpers import days_in_year
 from pendulum.helpers import precise_diff
 from pendulum.helpers import week_day
 
 
 def assert_diff(
-    diff, years=0, months=0, days=0, hours=0, minutes=0, seconds=0, microseconds=0
-):
+    diff: PreciseDiff,
+    years: int = 0,
+    months: int = 0,
+    days: int = 0,
+    hours: int = 0,
+    minutes: int = 0,
+    seconds: int = 0,
+    microseconds: int = 0,
+) -> None:
     assert diff.years == years
     assert diff.months == months
     assert diff.days == days
@@ -25,7 +33,7 @@ def assert_diff(
     assert diff.microseconds == microseconds
 
 
-def test_precise_diff():
+def test_precise_diff() -> None:
     dt1 = datetime(2003, 3, 1, 0, 0, 0)
     dt2 = datetime(2003, 1, 31, 23, 59, 59)
 
@@ -76,7 +84,7 @@ def test_precise_diff():
     assert_diff(diff, days=6, hours=0)
 
 
-def test_precise_diff_timezone():
+def test_precise_diff_timezone() -> None:
     paris = pendulum.timezone("Europe/Paris")
     toronto = pendulum.timezone("America/Toronto")
 
@@ -92,16 +100,16 @@ def test_precise_diff_timezone():
     assert_diff(diff, days=1, hours=5)
 
     # pytz
-    paris = pytz.timezone("Europe/Paris")
-    toronto = pytz.timezone("America/Toronto")
+    paris_pytz = pytz.timezone("Europe/Paris")
+    toronto_pytz = pytz.timezone("America/Toronto")
 
-    dt1 = paris.localize(datetime(2013, 3, 31, 1, 30))
-    dt2 = paris.localize(datetime(2013, 4, 1, 1, 30))
+    dt1 = paris_pytz.localize(datetime(2013, 3, 31, 1, 30))
+    dt2 = paris_pytz.localize(datetime(2013, 4, 1, 1, 30))
 
     diff = precise_diff(dt1, dt2)
     assert_diff(diff, days=1, hours=0)
 
-    dt2 = toronto.localize(datetime(2013, 4, 1, 1, 30))
+    dt2 = toronto_pytz.localize(datetime(2013, 4, 1, 1, 30))
 
     diff = precise_diff(dt1, dt2)
     assert_diff(diff, days=1, hours=5)
@@ -113,17 +121,17 @@ def test_precise_diff_timezone():
     assert_diff(diff, minutes=10)
 
 
-def test_week_day():
+def test_week_day() -> None:
     assert week_day(2017, 6, 2) == 5
     assert week_day(2017, 1, 1) == 7
 
 
-def test_days_in_years():
+def test_days_in_years() -> None:
     assert days_in_year(2017) == 365
     assert days_in_year(2016) == 366
 
 
-def test_locale():
+def test_locale() -> None:
     dt = pendulum.datetime(2000, 11, 10, 12, 34, 56, 123456)
     pendulum.set_locale("fr")
 
@@ -133,7 +141,7 @@ def test_locale():
     assert dt.date().format("MMMM") == "novembre"
 
 
-def test_set_locale_invalid():
+def test_set_locale_invalid() -> None:
     with pytest.raises(ValueError):
         pendulum.set_locale("invalid")
 
@@ -141,13 +149,13 @@ def test_set_locale_invalid():
 @pytest.mark.parametrize(
     "locale", ["DE", "pt-BR", "pt-br", "PT-br", "PT-BR", "pt_br", "PT_BR", "PT_BR"]
 )
-def test_set_locale_malformed_locale(locale):
+def test_set_locale_malformed_locale(locale: str) -> None:
     pendulum.set_locale(locale)
 
     pendulum.set_locale("en")
 
 
-def test_week_starts_at():
+def test_week_starts_at() -> None:
     pendulum.week_starts_at(pendulum.SATURDAY)
 
     dt = pendulum.now().start_of("week")
@@ -155,7 +163,7 @@ def test_week_starts_at():
     assert dt.date().day_of_week == pendulum.SATURDAY
 
 
-def test_week_starts_at_invalid_value():
+def test_week_starts_at_invalid_value() -> None:
     with pytest.raises(ValueError):
         pendulum.week_starts_at(-1)
 
@@ -163,7 +171,7 @@ def test_week_starts_at_invalid_value():
         pendulum.week_starts_at(11)
 
 
-def test_week_ends_at():
+def test_week_ends_at() -> None:
     pendulum.week_ends_at(pendulum.SATURDAY)
 
     dt = pendulum.now().end_of("week")
@@ -171,7 +179,7 @@ def test_week_ends_at():
     assert dt.date().day_of_week == pendulum.SATURDAY
 
 
-def test_week_ends_at_invalid_value():
+def test_week_ends_at_invalid_value() -> None:
     with pytest.raises(ValueError):
         pendulum.week_ends_at(-1)
 
diff --git a/tests/test_main.py b/tests/test_main.py
index 1710bf29..7d6c46b0 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -6,7 +6,7 @@
 from pendulum.tz.timezone import Timezone
 
 
-def test_safe_timezone_with_tzinfo_objects():
+def test_safe_timezone_with_tzinfo_objects() -> None:
     tz = _safe_timezone(pytz.timezone("Europe/Paris"))
 
     assert isinstance(tz, Timezone)
diff --git a/tests/test_parsing.py b/tests/test_parsing.py
index 0e5308c8..37812ee2 100644
--- a/tests/test_parsing.py
+++ b/tests/test_parsing.py
@@ -8,13 +8,14 @@
 from tests.conftest import assert_time
 
 
-def test_parse():
+def test_parse() -> None:
     text = "2016-10-16T12:34:56.123456+01:30"
 
     dt = pendulum.parse(text)
 
     assert isinstance(dt, pendulum.DateTime)
     assert_datetime(dt, 2016, 10, 16, 12, 34, 56, 123456)
+    assert dt.tz is not None
     assert dt.tz.name == "+01:30"
     assert dt.offset == 5400
 
@@ -36,16 +37,18 @@ def test_parse():
     assert dt.offset == 0
 
 
-def test_parse_with_timezone():
+def test_parse_with_timezone() -> None:
     text = "2016-10-16T12:34:56.123456"
 
     dt = pendulum.parse(text, tz="Europe/Paris")
+    assert isinstance(dt, pendulum.DateTime)
     assert_datetime(dt, 2016, 10, 16, 12, 34, 56, 123456)
+    assert dt.tz is not None
     assert dt.tz.name == "Europe/Paris"
     assert dt.offset == 7200
 
 
-def test_parse_exact():
+def test_parse_exact() -> None:
     text = "2016-10-16T12:34:56.123456+01:30"
 
     dt = pendulum.parse(text, exact=True)
@@ -76,7 +79,7 @@ def test_parse_exact():
     assert_time(dt, 13, 0, 0)
 
 
-def test_parse_duration():
+def test_parse_duration() -> None:
     text = "P2Y3M4DT5H6M7S"
 
     duration = pendulum.parse(text)
@@ -92,7 +95,7 @@ def test_parse_duration():
     assert_duration(duration, 0, 0, 2, 0, 0, 0, 0)
 
 
-def test_parse_interval():
+def test_parse_interval() -> None:
     text = "2008-05-11T15:30:00Z/P1Y2M10DT2H30M"
 
     period = pendulum.parse(text)
@@ -124,7 +127,7 @@ def test_parse_interval():
     assert period.end.offset == 0
 
 
-def test_parse_now():
+def test_parse_now() -> None:
     dt = pendulum.parse("now")
 
     assert dt.timezone_name == "America/Toronto"
@@ -135,7 +138,7 @@ def test_parse_now():
         assert pendulum.parse("now") == mock_now
 
 
-def test_parse_with_utc_timezone():
+def test_parse_with_utc_timezone() -> None:
     dt = pendulum.parse("2020-02-05T20:05:37.364951Z")
 
     assert dt.to_iso8601_string() == "2020-02-05T20:05:37.364951Z"
diff --git a/tests/tz/test_helpers.py b/tests/tz/test_helpers.py
index edec6fda..9402372c 100644
--- a/tests/tz/test_helpers.py
+++ b/tests/tz/test_helpers.py
@@ -2,7 +2,7 @@
 
 import pytest
 
-from pendulum.tz import timezone
+from pendulum import timezone
 from pendulum.tz.exceptions import InvalidTimezone
 from pendulum.tz.timezone import FixedTimezone
 from pendulum.tz.timezone import Timezone