diff --git a/.github/workflows/tox.yml b/.github/workflows/tox.yml
index edbd6f4..48f2b44 100644
--- a/.github/workflows/tox.yml
+++ b/.github/workflows/tox.yml
@@ -17,5 +17,6 @@ jobs:
       python-versions: |
         3.10
         3.11
+        3.12
       working-directory: stubs
       checkout-ref: ${{ inputs.checkout-ref }}
diff --git a/stubs/pyproject.toml b/stubs/pyproject.toml
index f1ed07a..aade2d0 100644
--- a/stubs/pyproject.toml
+++ b/stubs/pyproject.toml
@@ -45,6 +45,6 @@ urls.Source = "https://github.com/ignition-devs/ignition-api/tree/8.1"
 urls.Tracker = "https://github.com/ignition-devs/ignition-api/issues"
 
 [tool.setuptools]
-include-package-data = true
 package-dir = { "" = "stubs" }
+include-package-data = true
 package-data."*" = [ "*.pyi", "py.typed" ]
diff --git a/stubs/tox.ini b/stubs/tox.ini
index d47a1e4..16e5a42 100644
--- a/stubs/tox.ini
+++ b/stubs/tox.ini
@@ -9,6 +9,8 @@ skip_missing_interpreters = true
 description = install and run type check on code base
 deps =
     mypy[python2] @ git+https://github.com/coatl-dev/mypy.git@v0.971
+set_env =
+    CFLAGS = -std=gnu17
 commands =
     mypy stubs