diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index db1ab6f..720bf06 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -11,7 +11,7 @@ jobs:
         python-version: [ 3.7, 3.8 ]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
         with: