diff --git a/.gitignore b/.gitignore
index ed7b532f..2db46b82 100644
--- a/.gitignore
+++ b/.gitignore
@@ -102,3 +102,6 @@ env3?/
 
 # VSCode project settings
 /.vscode
+
+# MyPy cache
+.mypy_cache/
diff --git a/setup.cfg b/setup.cfg
index c5d51ac7..e01a4e25 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -11,3 +11,7 @@ exclude =
   env??/,
   .venv/,
   site/
+
+[mypy]
+files=cibuildwheel/
+strict=True