diff --git a/.travis.yml b/.travis.yml
index bb74a95b..3d8c12c5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,8 +3,9 @@ node_js:
   - 'stable'
   - 'lts/*'
 before_script:
+  - 'npm install grunt-cli -g'
   - 'export DISPLAY=:99.0'
   - 'sh -e /etc/init.d/xvfb start'
-  - sleep 3
+  - 'sleep 3'
 
 script: npm run lint && npm run test && grunt pre-build && npm run test:e2e