diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5157e6da..6b39fd15 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,6 +13,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+    - uses: actions/checkout@v4
     - name: Set up Python 3.10
       uses: actions/setup-python@v3
       with: