diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5d7fc8d..44d6e7d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,16 +1,20 @@
-name: ci 
-on:
-  push:
-    branches:
-      - master 
-      - main
-jobs:
-  deploy:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
-        with:
-          python-version: 3.x
-      - run: pip install mkdocs-material 
-      - run: mkdocs gh-deploy --force
+name: ci
+  on:
+    push:
+      branches:
+        - master
+        - main
+  jobs:
+    deploy:
+      runs-on: ubuntu-latest
+      steps:
+        - uses: actions/checkout@v2
+        - uses: actions/setup-python@v2
+          with:
+            python-version: 3.x
+        - uses: actions/cache@v2
+          with:
+            key: ${{ github.ref }}
+            path: .cache
+        - run: pip install mkdocs-material
+        - run: mkdocs gh-deploy --force