diff --git a/.travis.yml b/.travis.yml
index 908af34..9ac7a0f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,7 +2,7 @@ sudo: false
 language: node_js
 
 node_js:
-  - "4.0"
+  - "6"
   - "stable"
 
 after_script: "npm install coveralls@2 && cat ./coverage/lcov.info | coveralls"