diff --git a/.travis.yml b/.travis.yml
index 796d98f..12c54db 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,3 +1,8 @@
 language: node_js
 node_js:
   - "0.12"
+  - "4"
+  - "6"
+  - "8"
+  - "9"
+