diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index ee1c060..bcbccfb 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -62,6 +62,9 @@ jobs:
         run: poetry install --no-interaction
         if: steps.cache-deps.outputs.cache-hit != 'true'
 
+      - name: Check code formatting with black
+        run: poetry run black --check .
+
       - name: Lint with flake8
         run: |
           # stop the build if there are Python syntax errors or undefined names