diff --git a/.github/workflows/mypy.yml b/.github/workflows/mypy.yml
index 3a2e60a..e588b67 100644
--- a/.github/workflows/mypy.yml
+++ b/.github/workflows/mypy.yml
@@ -20,4 +20,4 @@ jobs:
         pip install -r requirements/dev_requirements.txt
     - name: Analysing code with mypy
       run: |
-        mypy --explicit-package-bases $(git ls-files '*.py')
+        mypy src/platotk