diff --git a/.github/workflows/mypy.yml b/.github/workflows/mypy.yml
index 5dd5f8e..5deb0fe 100644
--- a/.github/workflows/mypy.yml
+++ b/.github/workflows/mypy.yml
@@ -16,7 +16,7 @@ jobs:
     name: Python ${{ matrix.python-version }} sample
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python
       uses: actions/setup-python@v4
       with: