diff --git a/.github/workflows/python-workflow.yml b/.github/workflows/python-workflow.yml
index bb38dd0f..b2687e57 100644
--- a/.github/workflows/python-workflow.yml
+++ b/.github/workflows/python-workflow.yml
@@ -8,6 +8,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+    - name: checkout
+      uses: actions/checkout@v4
+
     - name: Set up Python 3.8
       uses: actions/setup-python@v2
       with: