diff --git a/.github/workflows/python-app.yml b/.github/workflows/python-app.yml
index 3254d6c..4666106 100644
--- a/.github/workflows/python-app.yml
+++ b/.github/workflows/python-app.yml
@@ -23,7 +23,10 @@ jobs:
     - name: Static analysis
       run: |
         pip install flake8
-        flake8 --max-line-length=150 --ignore=E266 *.py project/*.py project/*/routes.py
+        # stop the build if there are Python syntax errors or undefined names
+        flake8 --count --select=E9,F63,F7,F82 --show-source --statistics *.py project/*.py project/*/routes.py
+        # exit-zero treats all errors as warnings.
+        flake8 --count --exit-zero --max-complexity=10 --max-line-length=150 --statistics --ignore=E266 *.py project/*.py project/*/routes.py
     - name: Test with pytest
       run: |
         pip install pytest