diff --git a/.travis.yml b/.travis.yml
index fd161f0..0392fa6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,7 @@
 language: node_js
 node_js:
   - "8"
+  - "9"
 matrix:
   fast_finish: true
 script: "npm run-script coverage"