diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 24cb4ab10..481feb812 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -241,7 +241,7 @@ jobs:
 
         -   name: Deploy to GitHub pages
             if: ${{ env.BUILD_DOC == 'true' }}
-            uses: peaceiris/actions-gh-pages@v3
+            uses: peaceiris/actions-gh-pages@v4
             with:
                 github_token: ${{secrets.GITHUB_TOKEN}}
                 publish_dir: build/doc/html