diff --git a/.github/workflows/deploy-mkdocs.yml b/.github/workflows/deploy-mkdocs.yml
index bb48d35..8f65b67 100644
--- a/.github/workflows/deploy-mkdocs.yml
+++ b/.github/workflows/deploy-mkdocs.yml
@@ -87,4 +87,4 @@ jobs:
 
       - name: C3) Deploy to GitHub Pages
         # WHY: Publish artifact to GitHub Pages.
-        uses: actions/deploy-pages@v4
+        uses: actions/deploy-pages@v5