diff --git a/.github/workflows/deploy_doc.yml b/.github/workflows/deploy_doc.yml
index b9f57a0..9a6cf09 100644
--- a/.github/workflows/deploy_doc.yml
+++ b/.github/workflows/deploy_doc.yml
@@ -12,7 +12,7 @@ jobs:
   deploy_doc:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Deploy
         if: github.event_name != 'pull_request'
         uses: JamesIves/github-pages-deploy-action@v4.4.3