diff --git a/.travis.yml b/.travis.yml
index 6f74e18..27a5576 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,5 @@
 language: ruby
 rvm:
   - 2.0.0
-  - 2.1.2
-before_install: gem install bundler --version '~> 1.6' 
-
+  - 2.1.5
+  - 2.2.0