diff --git a/.travis.yml b/.travis.yml
index a113572c..10706ea1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,10 @@
 language: ruby
+before_install:
+  - gem install bundler -v '>= 1.5.1'
 rvm:
   - 1.9.3
   - 2.0.0
+  - 2.1.0
   - rbx
   - jruby-19mode
 gemfile: