diff --git a/.github/workflows/mypy.yml b/.github/workflows/mypy.yml
index 93bf081d11e4dc..f488959b9231c5 100644
--- a/.github/workflows/mypy.yml
+++ b/.github/workflows/mypy.yml
@@ -13,6 +13,7 @@ on:
       - "Lib/test/libregrtest/**"
       - "Lib/tomllib/**"
       - "Misc/mypy/**"
+      - "Tools/build/mypy.ini"
       - "Tools/build/check_extension_modules.py"
       - "Tools/build/compute-changes.py"
       - "Tools/build/deepfreeze.py"