diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index 9313cf4..3d33468 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10", "3.11", "3.12"]
+        python-version: ["3.11", "3.12"]
         os: [ubuntu-latest, windows-latest]
 
     steps:
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 6532e54..b6b03c9 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,7 +1,7 @@
 exclude: 'test_hookman_generator/.*'
 repos:
 -   repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.16.9
+    rev: v0.17.0
     hooks:
       - id: ruff-check
         args: ["--fix"]
@@ -21,7 +21,7 @@ repos:
         language: python
         additional_dependencies: [pygments, restructuredtext_lint]
 -   repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v2.3.1
+    rev: v2.4.0
     hooks:
     -   id: mypy
         files: ^(src/)
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 1e32bdd..ccdcdd2 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -5,6 +5,7 @@ History
 UNRELEASED
 ==========
 
+- Dropped support for Python 3.10 (EOL).
 - Added full type annotations and exported types (via ``py.typed``).
 - Suppress the Windows hard-error dialog that ``LoadLibraryW`` would raise when a plugin
   DLL has unresolved imports (e.g. a conflicting dependency version bundled inside the
diff --git a/setup.py b/setup.py
index c7d5974..05cf154 100644
--- a/setup.py
+++ b/setup.py
@@ -22,7 +22,6 @@
         "Intended Audience :: Developers",
         "License :: OSI Approved :: MIT License",
         "Natural Language :: English",
-        "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
     ],
@@ -36,7 +35,7 @@
     include_package_data=True,
     keywords="hookman",
     name="python-hookman",
-    python_requires=">=3.10",
+    python_requires=">=3.11",
     packages=find_packages("src", include=["hookman"]),
     package_dir={"": "src"},
     url="https://github.com/esss/hookman",
diff --git a/src/hookman/dll_diagnostics.py b/src/hookman/dll_diagnostics.py
index 2836335..ebe6fa9 100644
--- a/src/hookman/dll_diagnostics.py
+++ b/src/hookman/dll_diagnostics.py
@@ -16,8 +16,7 @@
 from collections.abc import Sequence
 from dataclasses import dataclass
 from pathlib import Path
-
-from typing_extensions import Self
+from typing import Self
 
 #: Directories explicitly registered via `os.add_dll_directory` by this process,
 #: in registration order. `os` provides no API to enumerate them, so callers that add