diff --git a/.travis.yml b/.travis.yml
index a41a2c7..9d9cfc6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,6 +6,9 @@ node_js:
   - "0.12"
   - "4"
   - "5"
+  - "6"
+  - "6.0"
+  - "6.4"
   - "iojs"
   - "iojs-v2.4.0"
   - "iojs-v3.2.0"