diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8c62a8e..b082280 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
       fail-fast: false
       matrix:
         # Also adapt tox.ini on change
-        python-version: ['3.9', 'pypy3.11', '3.x']
+        python-version: ['3.10', 'pypy3.11', '3.x']
         # macOS on ARM, Ubuntu on x86, Windows on X86
         os: [macos-latest, ubuntu-latest, windows-latest]
     steps:
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index d014297..27693e2 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -4,6 +4,9 @@
 # `pipx install pre-commit` or `brew install pre-commit`
 # Then in the project root directory run `pre-commit install`
 
+ci:
+  autoupdate_schedule: monthly
+
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v6.0.0
@@ -56,7 +59,7 @@ repos:
           - tomli
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.13.1
+    rev: v0.13.2
     hooks:
       - id: ruff-check
       - id: ruff-format
diff --git a/pyproject.toml b/pyproject.toml
index 0eb0f89..680036e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,7 +19,7 @@ authors = [
   { name = "Andrew Davis", email = "theandrewdavis@gmail.com" },
   { name = "cpplint developers" },
 ]
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 classifiers = [
   "Development Status :: 5 - Production/Stable",
   "Environment :: Console",
@@ -29,7 +29,6 @@ classifiers = [
   "Natural Language :: English",
   "Programming Language :: C++",
   "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",
diff --git a/tox.ini b/tox.ini
index f7e3911..14a8906 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py39, py310, py311, py312, py313, pypy3
+envlist = py310, py311, py312, py313, py314, pypy3
 skip_missing_interpreters = true