diff --git a/.github/workflows/doc.yml b/.github/workflows/doc.yml
index b617257..f7f94d2 100644
--- a/.github/workflows/doc.yml
+++ b/.github/workflows/doc.yml
@@ -38,4 +38,12 @@ jobs:
           branch: gh-pages
           folder: public
 
-# vim: set sw=2 tw=2 :
+      - uses: actions/cache@v2
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            target
+          key: ${{ runner.os }}-cargo
+
+# vim: set ts=2 tw=2 sw=2 et :
diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index 978aba2..5dc0666 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -18,3 +18,12 @@ jobs:
         run: |
           cargo test --all
 
+      - uses: actions/cache@v2
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            target
+          key: ${{ runner.os }}-cargo
+
+# vim: set ts=2 tw=2 sw=2 et :