diff --git a/.travis.yml b/.travis.yml
index 852b2cab3..05eaf0491 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -19,7 +19,7 @@ bundler_args: "--without development production heroku"
 script: "./script/ci/build.sh"
 
 addons:
-  firefox: "26.0"
+  firefox: "31.0"
 
 notifications:
   irc: