diff --git a/.travis.yml b/.travis.yml
index 5d7304b..3f6da98 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,9 @@
 language: node_js
 node_js:
- - "0.10"
+ - 6
+ - 4
  - "0.11"
+ - "0.10"
 before_install:
   - npm install coffee-script
 script: