diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index f853771b..82275699 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -13,7 +13,7 @@ jobs:
 
       - name: Cache opam
         id: cache-opam
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: ~/.opam
           key: opam-ubuntu-latest-4.12.0