diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 20882cb..4e86810 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -38,7 +38,7 @@ jobs:
 
       - name: Deploy to GitHub Pages
         if: github.event_name == 'push'
-        uses: peaceiris/actions-gh-pages@v3.9.3
+        uses: peaceiris/actions-gh-pages@v4.0.0
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./public