diff --git a/.github/workflows/ci_cd.yml b/.github/workflows/ci_cd.yml
index 356ca42..b205c26 100644
--- a/.github/workflows/ci_cd.yml
+++ b/.github/workflows/ci_cd.yml
@@ -46,7 +46,7 @@ jobs:
 
       - name: Deploy on release
         if: startsWith(github.ref, 'refs/tags/v')
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: doc/_build/html/