diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1bc58950..f7eac066 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -114,7 +114,7 @@ jobs:
       # (run 31252869254). Persist the model across runs instead; HF_CACHE_DIR
       # is honored by vector-search-provider.ts.
       - name: Cache embedding model
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: ${{ github.workspace }}/.hf-cache
           key: hf-model-Xenova-all-MiniLM-L6-v2