diff --git a/.travis.yml b/.travis.yml
index 6472f2cc7..71ec6b270 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,6 +14,8 @@ rvm:
   - 1.9.3
   - 2.0.0
   - 2.1.0
+  - 2.2.0
+  - ruby-head
   - jruby
 script: ruby -Ilib bin/rake
 matrix: