diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5dd9dcb..b9d12ff 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,13 +8,13 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v4
         with:
           python-version: 3.x
-      - uses: actions/cache@v2
+      - uses: actions/cache@v4
         with:
-          key: ${{ github.ref }}
-          path: .cache
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+          path: ~/.cache/pip
       - run: pip install mkdocs-material
       - run: mkdocs gh-deploy --force