diff --git a/.travis.yml b/.travis.yml
index a125fb3f..3e79c124 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,8 +5,9 @@ node_js:
 - '0.11'
 - '0.12'
 - 'iojs'
-- '4.0'
-- '4.1'
+- '4'
+- '5'
+- '6'
 
 services:
 - redis-server