diff --git a/.travis.yml b/.travis.yml
index 129eb45..2386e1a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,7 +7,7 @@ notifications:
     on_failure: change
 
 node_js:
-  - '4'
+  - '6'
   - stable
 
 after_script: "npm install coveralls@2 && cat ./coverage/lcov.info | coveralls"