diff --git a/.github/workflows/buildtest.yml b/.github/workflows/buildtest.yml
index 79ae12b2e..8e06501aa 100644
--- a/.github/workflows/buildtest.yml
+++ b/.github/workflows/buildtest.yml
@@ -120,7 +120,7 @@ jobs:
       - name: Deploy documentation
         # Only deploy for master on original repo (and not for pull requests or forks)
         if: matrix.debugOrRelease == 'release' && github.repository_owner == 'moves-rwth' && github.ref == 'refs/heads/master'
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           personal_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./html