diff --git a/.appveyor.yml b/.appveyor.yml
index c78f59f..e296350 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -17,3 +17,5 @@ matrix:
 shallow_clone: true
 clone_depth: 1
 test_script: npm t
+cache:
+  - node_modules
diff --git a/.travis.yml b/.travis.yml
index 36f7e51..6b854f4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,3 +4,6 @@ node_js:
   - 8
 before_install:
   - npm i -g npm@latest
+cache:
+  directories:
+    - node_modules