diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7ff96f1c3..e86aaff08 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -27,7 +27,7 @@ jobs:
 
       # Note: must come *after* npm ci, as that step removes node_modules entirely
       - name: Cache Vite dependency optimizer output
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: node_modules/.vite
           key: vite-deps-${{ runner.os }}-${{ hashFiles('package-lock.json', 'vite.config.ts') }}