diff --git a/.github/workflows/check-quality.yml b/.github/workflows/check-quality.yml
index e4e43be..48c148e 100644
--- a/.github/workflows/check-quality.yml
+++ b/.github/workflows/check-quality.yml
@@ -22,10 +22,10 @@ jobs:
         run: devbox run poetry build
         
       - name: analyse with mypy
-        run: devbox run poetry run mypy surplus.py
+        run: devbox run poetry run mypy surplus.py test.py
 
       - name: check for black formatting compliance
-        run: devbox run poetry run "black --check surplus.py"
+        run: devbox run poetry run "black --check surplus.py test.py"
 
       - name: analyse isort compliance
-        run: devbox run poetry run "isort --check surplus.py"
+        run: devbox run poetry run "isort --check surplus.py test.py"