diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 682e716..187476a 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -81,7 +81,7 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v4
+        uses: actions/deploy-pages@v5
 
   # -------------------------------------------------------------------------
   # CI gate — all required jobs must pass before this job succeeds.