diff --git a/.github/workflows/tags.yml b/.github/workflows/tags.yml
index 2138bb8..697f7ee 100644
--- a/.github/workflows/tags.yml
+++ b/.github/workflows/tags.yml
@@ -271,7 +271,7 @@ jobs:
           exec: cd gh-pages && rm -rf .git && helm repo index . --url https://bokysan.github.io/docker-postfix
 
       - name: Upload gh-pages
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./gh-pages