diff --git a/.travis.yml b/.travis.yml
index cef310e..6d9b2ab 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,15 @@
 language: node_js
 node_js:
   - "stable"
+  - "9"
+  - "8"
   - "6"
   - "4"
 sudo: false
 script: npm test
+matrix:
+  allow_failures:
+  - node_js: "stable"
+  - node_js: "9"
 after_success:
   - "cat coverage/lcov.info | ./node_modules/.bin/coveralls"