diff --git a/.travis.yml b/.travis.yml
index 5b5cdea..2bcaef6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,7 @@ sudo: false
 language: node_js
 node_js:
   - "stable"
+  - 6
   - 4
 
 after_success: "cat ./coverage/lcov.info | ./node_modules/.bin/coveralls"