diff --git a/.travis.yml b/.travis.yml
index a833fdf3d6..a92abde5dc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,10 @@ language: node_js
 node_js:
   - "8"
   - "6"
+cache:
+  yarn: true
+  directories:
+    - node_modules
 install:
   - yarn install
   - yarn run build
diff --git a/appveyor.yml b/appveyor.yml
index 5c62e6be35..f001912793 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -4,6 +4,10 @@ environment:
     - nodejs_version: "6"
     - nodejs_version: "8"
 
+cache:
+  - "%LOCALAPPDATA%\\Yarn"
+  - node_modules
+
 # Install scripts. (runs after repo cloning)
 install:
   # Get the latest stable version of Node.js or io.js