diff --git a/.travis.yml b/.travis.yml
index 24e703f..9af41a7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,9 @@
 sudo: false
 language: node_js
 node_js:
-  - 'stable'
+  - '9'
+  - '8'
+  - '6'
   - '4'
   - '0.12'
   - '0.10'
-before_install:
-  - 'npm install -g npm' # need those scoped packages