diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 540b261b..32f269da 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -38,7 +38,6 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-          - "3.9"
           - "3.10"
           - "3.11"
           - "3.12"
@@ -64,7 +63,6 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-          - "3.9"
           - "3.10"
           - "3.11"
           - "3.12"
diff --git a/pyproject.toml b/pyproject.toml
index b8ad11ea..173d8992 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,7 +19,7 @@ maintainers = [
 authors = [
   { name = "Jim Pivarski, Henry Schreiner, Eduardo Rodrigues", email = "eduardo.rodrigues@cern.ch" },
 ]
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 classifiers = [
   "Development Status :: 5 - Production/Stable",
   "Intended Audience :: Developers",
@@ -27,7 +27,6 @@ classifiers = [
   "Operating System :: OS Independent",
   "Programming Language :: Python",
   "Programming Language :: Python :: 3 :: Only",
-  "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
@@ -49,7 +48,7 @@ dependencies = [
 
 [project.optional-dependencies]
 awkward = ["awkward>=2"]
-numba = ["numba>=0.57; python_version<'3.14'"]
+numba = ["numba>=0.62; python_version<'3.14'"]
 sympy = ["sympy"]
 
 [project.urls]
@@ -173,7 +172,7 @@ isort.required-imports = [
 ]
 
 [tool.pylint]
-master.py-version = "3.9"
+master.py-version = "3.10"
 reports.output-format = "colorized"
 similarities.ignore-imports = "yes"
 master.jobs = "0"
@@ -262,7 +261,7 @@ filterwarnings = [
 files = [
   "src/vector",
 ]
-python_version = "3.9"
+python_version = "3.10"
 strict = true
 warn_return_any = false
 enable_error_code = [
diff --git a/src/vector/backends/_numba_object.py b/src/vector/backends/_numba_object.py
index 37b79f4b..3ec45db4 100644
--- a/src/vector/backends/_numba_object.py
+++ b/src/vector/backends/_numba_object.py
@@ -50,36 +50,6 @@
     _coord_object_type,
 )
 
-
-@numba.extending.overload(numpy.nan_to_num)  # FIXME: This needs to go into Numba!
-def nan_to_num(x, copy=True, nan=0.0, posinf=None, neginf=None):
-    if isinstance(x, numba.types.Array):
-
-        def nan_to_num_impl(x, copy=True, nan=0.0, posinf=None, neginf=None):
-            out = numpy.copy(x).reshape(-1) if copy else x.reshape(-1)
-            for i in range(len(out)):
-                if numpy.isnan(out[i]):
-                    out[i] = nan
-                if posinf is not None and numpy.isinf(out[i]) and out[i] > 0:
-                    out[i] = posinf
-                if neginf is not None and numpy.isinf(out[i]) and out[i] < 0:
-                    out[i] = neginf
-            return out.reshape(x.shape)
-
-    else:
-
-        def nan_to_num_impl(x, copy=True, nan=0.0, posinf=None, neginf=None):
-            if numpy.isnan(x):
-                return nan
-            if posinf is not None and numpy.isinf(x) and x > 0:
-                return posinf
-            if neginf is not None and numpy.isinf(x) and x < 0:
-                return neginf
-            return x
-
-    return nan_to_num_impl
-
-
 # Since CoordinateObjects are NamedTuples, we get their types wrapped for free.
 
 
diff --git a/src/vector/backends/awkward.py b/src/vector/backends/awkward.py
index 6e049e83..44e392a0 100644
--- a/src/vector/backends/awkward.py
+++ b/src/vector/backends/awkward.py
@@ -83,7 +83,7 @@
 # Throws an error if awkward is too old
 vector._import_awkward()
 
-ArrayOrRecord = typing.TypeVar("ArrayOrRecord", bound=typing.Union[ak.Array, ak.Record])
+ArrayOrRecord = typing.TypeVar("ArrayOrRecord", bound=ak.Array | ak.Record)
 Array = typing.TypeVar("Array")
 
 behavior: typing.Any = {}