diff --git a/.travis.yml b/.travis.yml
index b9fa89a..814d494 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,11 @@
 rvm:
-  - 2.1.3
+  - 2.3.0
+  - 2.2.4
+  - 2.1.8
   - 2.0.0
   - 1.9.3
   - jruby-19mode
+before_install:
+  - gem update --system
+  - gem update bundler
+install: "bundle install"