diff --git a/.travis.yml b/.travis.yml
index c7a451f..0980f77 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,8 @@
 language: node_js
 node_js:
+- '9'
+- '8'
 - '6'
-- '5'
 - '4'
 before_script:
 - npm install -g gulp