diff --git a/.travis.yml b/.travis.yml
index 5253554..ff0cc7d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,4 @@
 language: node_js
 node_js:
   - 'node'
-  - '6'
-  - '5'
-  - '4'
+  - '8'