diff --git a/.travis.yml b/.travis.yml
index a462de67..8e2a1db3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,8 @@ language: node_js
 
 node_js:
   - "4"
+  - "5"
+  - "6"
 
 addons:
   apt: