diff --git a/.travis.yml b/.travis.yml
index 9a040ed..8530cac 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,8 @@ language: node_js
 node_js:
   - "0.12"
   - "4"
+  - "5"
+  - "6"
 env:
   global:
     - BUILD_TIMEOUT=10000