diff --git a/.github/workflows/deploy_docs.yml b/.github/workflows/deploy_docs.yml
index 166af9b..ba672cb 100644
--- a/.github/workflows/deploy_docs.yml
+++ b/.github/workflows/deploy_docs.yml
@@ -22,7 +22,7 @@ jobs:
                 python-version: '3.x'
 
             - name: Cache pip dependencies
-              uses: actions/cache@v2
+              uses: actions/cache@v4
               with:
                 key: ${{ github.ref }}
                 path: .cache