diff --git a/.github/workflows/python-3-9.yml b/.github/workflows/python-3-9.yml
index a03c805..33dd6d3 100644
--- a/.github/workflows/python-3-9.yml
+++ b/.github/workflows/python-3-9.yml
@@ -27,4 +27,4 @@ jobs:
       - name: Run tests
         shell: bash -el {0}
         run: |
-          cd tests/python-3-9 && poetry run pytest -Werrror
+          cd tests/python-3-9 && poetry run pytest -Werror