diff --git a/poetry.lock b/poetry.lock
index 031fefa..99dafa1 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 1.7.1 and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.8.3 and should not be changed by hand.
 
 [[package]]
 name = "aiohappyeyeballs"
@@ -1208,28 +1208,29 @@ jupyter = ["ipywidgets (>=7.5.1,<9)"]
 
 [[package]]
 name = "ruff"
-version = "0.2.2"
+version = "0.5.6"
 description = "An extremely fast Python linter and code formatter, written in Rust."
 optional = false
 python-versions = ">=3.7"
 files = [
-    {file = "ruff-0.2.2-py3-none-macosx_10_12_x86_64.macosx_11_0_arm64.macosx_10_12_universal2.whl", hash = "sha256:0a9efb032855ffb3c21f6405751d5e147b0c6b631e3ca3f6b20f917572b97eb6"},
-    {file = "ruff-0.2.2-py3-none-macosx_10_12_x86_64.whl", hash = "sha256:d450b7fbff85913f866a5384d8912710936e2b96da74541c82c1b458472ddb39"},
-    {file = "ruff-0.2.2-py3-none-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:ecd46e3106850a5c26aee114e562c329f9a1fbe9e4821b008c4404f64ff9ce73"},
-    {file = "ruff-0.2.2-py3-none-manylinux_2_17_armv7l.manylinux2014_armv7l.whl", hash = "sha256:5e22676a5b875bd72acd3d11d5fa9075d3a5f53b877fe7b4793e4673499318ba"},
-    {file = "ruff-0.2.2-py3-none-manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:1695700d1e25a99d28f7a1636d85bafcc5030bba9d0578c0781ba1790dbcf51c"},
-    {file = "ruff-0.2.2-py3-none-manylinux_2_17_ppc64.manylinux2014_ppc64.whl", hash = "sha256:b0c232af3d0bd8f521806223723456ffebf8e323bd1e4e82b0befb20ba18388e"},
-    {file = "ruff-0.2.2-py3-none-manylinux_2_17_ppc64le.manylinux2014_ppc64le.whl", hash = "sha256:f63d96494eeec2fc70d909393bcd76c69f35334cdbd9e20d089fb3f0640216ca"},
-    {file = "ruff-0.2.2-py3-none-manylinux_2_17_s390x.manylinux2014_s390x.whl", hash = "sha256:6a61ea0ff048e06de273b2e45bd72629f470f5da8f71daf09fe481278b175001"},
-    {file = "ruff-0.2.2-py3-none-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:5e1439c8f407e4f356470e54cdecdca1bd5439a0673792dbe34a2b0a551a2fe3"},
-    {file = "ruff-0.2.2-py3-none-musllinux_1_2_aarch64.whl", hash = "sha256:940de32dc8853eba0f67f7198b3e79bc6ba95c2edbfdfac2144c8235114d6726"},
-    {file = "ruff-0.2.2-py3-none-musllinux_1_2_armv7l.whl", hash = "sha256:0c126da55c38dd917621552ab430213bdb3273bb10ddb67bc4b761989210eb6e"},
-    {file = "ruff-0.2.2-py3-none-musllinux_1_2_i686.whl", hash = "sha256:3b65494f7e4bed2e74110dac1f0d17dc8e1f42faaa784e7c58a98e335ec83d7e"},
-    {file = "ruff-0.2.2-py3-none-musllinux_1_2_x86_64.whl", hash = "sha256:1ec49be4fe6ddac0503833f3ed8930528e26d1e60ad35c2446da372d16651ce9"},
-    {file = "ruff-0.2.2-py3-none-win32.whl", hash = "sha256:d920499b576f6c68295bc04e7b17b6544d9d05f196bb3aac4358792ef6f34325"},
-    {file = "ruff-0.2.2-py3-none-win_amd64.whl", hash = "sha256:cc9a91ae137d687f43a44c900e5d95e9617cb37d4c989e462980ba27039d239d"},
-    {file = "ruff-0.2.2-py3-none-win_arm64.whl", hash = "sha256:c9d15fc41e6054bfc7200478720570078f0b41c9ae4f010bcc16bd6f4d1aacdd"},
-    {file = "ruff-0.2.2.tar.gz", hash = "sha256:e62ed7f36b3068a30ba39193a14274cd706bc486fad521276458022f7bccb31d"},
+    {file = "ruff-0.5.6-py3-none-linux_armv6l.whl", hash = "sha256:a0ef5930799a05522985b9cec8290b185952f3fcd86c1772c3bdbd732667fdcd"},
+    {file = "ruff-0.5.6-py3-none-macosx_10_12_x86_64.whl", hash = "sha256:b652dc14f6ef5d1552821e006f747802cc32d98d5509349e168f6bf0ee9f8f42"},
+    {file = "ruff-0.5.6-py3-none-macosx_11_0_arm64.whl", hash = "sha256:80521b88d26a45e871f31e4b88938fd87db7011bb961d8afd2664982dfc3641a"},
+    {file = "ruff-0.5.6-py3-none-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:d9bc8f328a9f1309ae80e4d392836e7dbc77303b38ed4a7112699e63d3b066ab"},
+    {file = "ruff-0.5.6-py3-none-manylinux_2_17_armv7l.manylinux2014_armv7l.whl", hash = "sha256:4d394940f61f7720ad371ddedf14722ee1d6250fd8d020f5ea5a86e7be217daf"},
+    {file = "ruff-0.5.6-py3-none-manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:111a99cdb02f69ddb2571e2756e017a1496c2c3a2aeefe7b988ddab38b416d36"},
+    {file = "ruff-0.5.6-py3-none-manylinux_2_17_ppc64.manylinux2014_ppc64.whl", hash = "sha256:e395daba77a79f6dc0d07311f94cc0560375ca20c06f354c7c99af3bf4560c5d"},
+    {file = "ruff-0.5.6-py3-none-manylinux_2_17_ppc64le.manylinux2014_ppc64le.whl", hash = "sha256:c476acb43c3c51e3c614a2e878ee1589655fa02dab19fe2db0423a06d6a5b1b6"},
+    {file = "ruff-0.5.6-py3-none-manylinux_2_17_s390x.manylinux2014_s390x.whl", hash = "sha256:e2ff8003f5252fd68425fd53d27c1f08b201d7ed714bb31a55c9ac1d4c13e2eb"},
+    {file = "ruff-0.5.6-py3-none-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:c94e084ba3eaa80c2172918c2ca2eb2230c3f15925f4ed8b6297260c6ef179ad"},
+    {file = "ruff-0.5.6-py3-none-musllinux_1_2_aarch64.whl", hash = "sha256:1f77c1c3aa0669fb230b06fb24ffa3e879391a3ba3f15e3d633a752da5a3e670"},
+    {file = "ruff-0.5.6-py3-none-musllinux_1_2_armv7l.whl", hash = "sha256:f908148c93c02873210a52cad75a6eda856b2cbb72250370ce3afef6fb99b1ed"},
+    {file = "ruff-0.5.6-py3-none-musllinux_1_2_i686.whl", hash = "sha256:563a7ae61ad284187d3071d9041c08019975693ff655438d8d4be26e492760bd"},
+    {file = "ruff-0.5.6-py3-none-musllinux_1_2_x86_64.whl", hash = "sha256:94fe60869bfbf0521e04fd62b74cbca21cbc5beb67cbb75ab33fe8c174f54414"},
+    {file = "ruff-0.5.6-py3-none-win32.whl", hash = "sha256:e6a584c1de6f8591c2570e171cc7ce482bb983d49c70ddf014393cd39e9dfaed"},
+    {file = "ruff-0.5.6-py3-none-win_amd64.whl", hash = "sha256:d7fe7dccb1a89dc66785d7aa0ac283b2269712d8ed19c63af908fdccca5ccc1a"},
+    {file = "ruff-0.5.6-py3-none-win_arm64.whl", hash = "sha256:57c6c0dd997b31b536bff49b9eee5ed3194d60605a4427f735eeb1f9c1b8d264"},
+    {file = "ruff-0.5.6.tar.gz", hash = "sha256:07c9e3c2a8e1fe377dd460371c3462671a728c981c3205a5217291422209f642"},
 ]
 
 [[package]]
@@ -1490,3 +1491,4 @@ test = ["big-O", "importlib-resources", "jaraco.functools", "jaraco.itertools",
 lock-version = "2.0"
 python-versions = ">=3.9.0,<4.0"
 content-hash = "57d1671be4c77a6fe3df059c10d70b93589e9dfa7e655b928df50a5f1b372a26"
+
diff --git a/pymodbus_repl/server/cli.py b/pymodbus_repl/server/cli.py
index eade60c..b5d2451 100644
--- a/pymodbus_repl/server/cli.py
+++ b/pymodbus_repl/server/cli.py
@@ -3,7 +3,7 @@
 import inspect
 import shutil
 from collections import defaultdict
-from typing import Optional
+from typing import Dict, Optional
 
 import click
 from prompt_toolkit import PromptSession, print_formatted_text
@@ -17,6 +17,9 @@
 from pymodbus_repl import __VERSION__ as repl_version
 from pymodbus_repl.lib.completer import CmdCompleter
 from pymodbus_repl.lib.helper import Command, style
+from pymodbus_repl.lib.reactive import (
+    ReactiveServer,
+)
 
 
 TITLE = r"""
@@ -37,7 +40,7 @@
 )
 COMMAND_ARGS = ["response_type", "error_code", "delay_by", "clear_after", "data_len"]
 RESPONSE_TYPES = ["normal", "error", "delayed", "empty", "stray"]
-COMMANDS = {
+COMMANDS: Dict[str, Optional[Dict | Command]] = {
     "manipulator": {
         "response_type": None,
         "error_code": None,
@@ -167,7 +170,7 @@ def _print_help():
         _print_help()
 
 
-def print_server_config(server: "ReactiveServer", print_server_context: bool = False, *extra) -> dict:  # noqa
+def print_server_config(server: ReactiveServer, print_server_context: bool = False, *extra):
     """Print server config."""
     print_formatted_text()
     print_formatted_text(HTML("<u>Server Configs:</u>"))
diff --git a/pyproject.toml b/pyproject.toml
index 7bf4a81..7c6e3ad 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,7 +29,7 @@ include = ["pymodbus_repl"]
 
 [tool.poetry.group.dev.dependencies]
 pymodbus = {git = "https://github.com/pymodbus-dev/pymodbus", rev = "dev"}
-ruff = "^0.2.1"
+ruff = "^0.5.6"
 coverage = "^7.4.1"
 pytest-xdist = "^3.5.0"
 pytest-cov = "^4.1.0"