diff --git a/.travis.yml b/.travis.yml
index 65a0293f..edde5261 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,6 @@
 language: ruby
+before_install:
+  - gem install bundler -v '1.5.1'
 rvm:
   - 1.9.3
   - 2.0.0