diff --git a/.github/workflows/push.yml b/.github/workflows/push.yml
index a2b2fc6..47477c9 100644
--- a/.github/workflows/push.yml
+++ b/.github/workflows/push.yml
@@ -29,7 +29,7 @@ jobs:
         run: ~/.elan/bin/lake -Kenv=dev build LeanCourse
 
       - name: Cache mathlib documentation
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: |
             .lake/build/doc/Init