diff --git a/.github/workflows/publish-gh-pages.yml b/.github/workflows/publish-gh-pages.yml
index f33eb0d0..076b2bab 100644
--- a/.github/workflows/publish-gh-pages.yml
+++ b/.github/workflows/publish-gh-pages.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
       with:
         submodules: recursive
     - name: chmod x *.sh
@@ -32,7 +32,7 @@ jobs:
       run: cp -r index.html style.css uml publish
 
     - name: Deploy
-      uses: peaceiris/actions-gh-pages@v3
+      uses: peaceiris/actions-gh-pages@v4
       if: ${{ github.ref == 'refs/heads/master' }}
       with:
         github_token: ${{ secrets.GITHUB_TOKEN }}