diff --git a/.github/workflows/python_pytest.yml b/.github/workflows/python_pytest.yml
index d47f5a8b..f1d86d05 100644
--- a/.github/workflows/python_pytest.yml
+++ b/.github/workflows/python_pytest.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11']
 
     steps:
     - name: Checkout code