diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index 0d58401..d22a131 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         name: Check out repository
         with:
           ref: ${{ github.event.pull_request.head.sha }}