diff --git a/.travis.yml b/.travis.yml
index 47c65a2..30fc8b7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,8 @@
 language: node_js
 node_js:
-  - 4
   - 6
   - 8
-  - 9
+  - 10
 before_install:
   - npm install -g npm@latest
   - npm install -g greenkeeper-lockfile@1