diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index 60efc7e..f31bb84 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -28,7 +28,7 @@ jobs:
         run: ford Docs/FTObjectLibraryProject.md
       - name: Deploy
         if: github.ref == 'refs/heads/main' # Only run on main
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           deploy_key: ${{ secrets.FORD_DOCUMENTATION_KEY }}