diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index 2ccc777..30af61e 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -54,7 +54,7 @@ jobs:
         run: ./deploy_docs_action.sh
 
       - name: Deploy
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./out