diff --git a/.travis.yml b/.travis.yml
index af073a3..b52599e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,5 @@
 rvm:
   - 1.9.2
 before_script:
-  - sudo apt-get install xulrunner-2.0
+  - sudo apt-get -y install xulrunner-2.0
   - gem install rspec