diff --git a/.travis.yml b/.travis.yml
index c542732..c948f03 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,15 +9,11 @@ node_js:
   - '6.0'
   - '7'
   - '8'
+  - '9'
   - 'node'
 
-cache:
-  yarn: true
-  directories:
-    - node_modules
-
 script:
-  - yarn run test
+  - npm run-script test
 
 after_success:
     - './node_modules/.bin/nyc report --reporter=text-lcov | ./node_modules/.bin/coveralls'