diff --git a/.travis.yml b/.travis.yml
index be3e1586..bd816b63 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,12 @@
 sudo: false
+
 language: node_js
+
 script: npm run lint && npm run coverage
+
 after_script: cat ./coverage/lcov.info | coveralls
+
 node_js:
-  - "stable"
+  - "4"
+  - "5"
+  - "6"