diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index 27117d0..fd3a6f6 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -12,10 +12,10 @@ jobs:
         with:
           fetch-depth: 1
 
-      - name: Set up Python 3.10
+      - name: Set up Python 3.9
         uses: actions/setup-python@v1
         with:
-          python-version: 3.10
+          python-version: 3.9
 
       - name: Install Poetry Action
         uses: snok/install-poetry@v1.3.3