diff --git a/.travis.yml b/.travis.yml
index a99f15a08..13e0e2be3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,9 @@ node_js:
   - "4"
   - "6"
   - "8"
+cache:
+  directories:
+    - node_modules
 os:
   - linux
 before_install: