diff --git a/.github/workflows/inception-test.yml b/.github/workflows/inception-test.yml
index 9794ddd..2f0b74e 100644
--- a/.github/workflows/inception-test.yml
+++ b/.github/workflows/inception-test.yml
@@ -62,6 +62,7 @@ jobs:
           TRAVIS_TOKEN: ${{ secrets.TRAVIS_TOKEN }}
           APPVEYOR_TOKEN: ${{ secrets.APPVEYOR_TOKEN }}
           CIRCLECI_CLI_TOKEN: ${{ secrets.CIRCLECI_CLI_TOKEN }}
+          PYTHONWARNINGS: error
 
       - name: Coverage report
         run: |