diff --git a/.github/workflows/tox.yml b/.github/workflows/tox.yml
index fe59e43..ff3bd6c 100644
--- a/.github/workflows/tox.yml
+++ b/.github/workflows/tox.yml
@@ -11,7 +11,6 @@ jobs:
     uses: coatl-dev/workflows/.github/workflows/tox.yml@d7cf5f9059f9a5fa365b8c9e06ff63f5d968ddb0 # v7.1.0
     with:
       python-versions: |
-        3.9
         3.10
         3.11
         3.12
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 28ee172..6af1190 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -26,7 +26,7 @@ repos:
         language_version: python3.12
         files: ^src/
   - repo: https://github.com/PyCQA/isort
-    rev: 10.0.0b1
+    rev: 10.0.0b2
     hooks:
       - id: isort
         name: isort-package
@@ -52,7 +52,7 @@ repos:
         args: [--config, tox.ini]
         additional_dependencies: [pydoclint]
   - repo: https://github.com/PyCQA/flake8
-    rev: 7.4.1
+    rev: 7.5.0
     hooks:
       - id: flake8
         name: flake8-stubs
diff --git a/stubs/tox.ini b/stubs/tox.ini
index 80d9fb0..fa6fdf8 100644
--- a/stubs/tox.ini
+++ b/stubs/tox.ini
@@ -12,6 +12,8 @@ base_python = python3.12
 skip_install = true
 deps =
     mypy[python2] @ git+https://github.com/coatl-dev/mypy.git@v0.971
+set_env =
+    CFLAGS = -std=gnu17
 commands =
     mypy stubs