diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index f512b3c..0f62f3d 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -19,6 +19,7 @@ jobs:
           - "ubuntu-22.04"
           - "macos-11"
           - "macos-12"
+          - "macos-13"
         python-version: 
           - "3.9"
           - "3.10"
diff --git a/clean.py b/clean.py
index 13a1ec8..03a1041 100755
--- a/clean.py
+++ b/clean.py
@@ -2,6 +2,8 @@
 import pathlib
 import shutil
 
+[shutil.rmtree(p) for p in pathlib.Path(".").glob(".mypy_cache")]
+[shutil.rmtree(p) for p in pathlib.Path(".").glob(".pytest_cache")]
 [shutil.rmtree(p) for p in pathlib.Path(".").glob(".tox")]
 [shutil.rmtree(p) for p in pathlib.Path(".").glob("dist")]
 [shutil.rmtree(p) for p in pathlib.Path(".").glob("*.egg-info")]