diff --git a/.github/workflows/gh_pages.yml b/.github/workflows/gh_pages.yml
index 5232f48f..42cfdfa9 100644
--- a/.github/workflows/gh_pages.yml
+++ b/.github/workflows/gh_pages.yml
@@ -18,7 +18,7 @@ jobs:
   build-and-deploy:
     runs-on: "ubuntu-22.04"
     steps:
-    - uses: actions/checkout@42
+    - uses: actions/checkout@4
     - name: Set up Python
       uses: actions/setup-python@v5
       with: