diff --git a/docs/changelog.md b/docs/changelog.md
index 45bc66d1..1c2d63c7 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -2,6 +2,14 @@
 
 ## Version 1.0
 
+### Unreleased
+
+#### Maintenance
+
+- chore: replace custom definition of np.isclose with numba's np.isclose [#348][]
+
+[#348]: https://github.com/scikit-hep/vector/pull/2348
+
 ### Version 1.0.0
 
 #### Features
diff --git a/environment.yml b/environment.yml
index 3a5a3a0c..894540b2 100644
--- a/environment.yml
+++ b/environment.yml
@@ -6,7 +6,7 @@ dependencies:
   - nb_conda_kernels
   - pip >=18
   - pytest >=6
-  - numba >=0.50
+  - numba >=0.57
   - numpy >=1.13.3
   - root >=6.18.04
   - pip:
diff --git a/pyproject.toml b/pyproject.toml
index 72281013..88025680 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -50,7 +50,7 @@ awkward = [
 ]
 dev = [
   "awkward>=1.2",
-  'numba>=0.50; python_version < "3.11"',
+  'numba>=0.57; python_version >= "3.8"',
   "papermill>=2.4",
   "pytest>=6",
   "pytest-cov>=3",
diff --git a/src/vector/backends/_numba_object.py b/src/vector/backends/_numba_object.py
index 705c34bf..358b0543 100644
--- a/src/vector/backends/_numba_object.py
+++ b/src/vector/backends/_numba_object.py
@@ -94,39 +94,6 @@ def nan_to_num_impl(x, copy=True, nan=0.0, posinf=None, neginf=None):
     return nan_to_num_impl
 
 
-@numba.extending.overload(numpy.isclose)  # FIXME: This needs to go into Numba!
-def isclose(a, b, rtol=1e-05, atol=1e-08, equal_nan=False):
-    if isinstance(a, numba.types.Array) and isinstance(b, numba.types.Array):
-
-        def isclose_impl(a, b, rtol=1e-05, atol=1e-08, equal_nan=False):
-            a, b = numpy.broadcast_arrays(a, b)
-            x = a.reshape(-1)
-            y = b.astype(numpy.float64).reshape(-1)
-            out = numpy.zeros(len(x), numpy.bool_)
-            for i in range(len(out)):
-                if numpy.isnan(x[i]) and numpy.isnan(y[i]):
-                    out[i] = equal_nan
-                elif numpy.isinf(x[i]) and numpy.isinf(y[i]):
-                    out[i] = (x[i] > 0) == (y[i] > 0)
-                else:
-                    out[i] = abs(x[i] - y[i]) <= atol + rtol * abs(y[i])
-            return out.reshape(a.shape)
-
-    else:
-
-        def isclose_impl(a, b, rtol=1e-05, atol=1e-08, equal_nan=False):
-            x = a
-            y = numpy.float64(b)
-            if numpy.isnan(x) and numpy.isnan(y):
-                return equal_nan
-            elif numpy.isinf(x) and numpy.isinf(y):
-                return (x > 0) == (y > 0)
-            else:
-                return abs(x - y) <= atol + rtol * abs(y)
-
-    return isclose_impl
-
-
 # Since CoordinateObjects are NamedTuples, we get their types wrapped for free.