diff --git a/.travis.yml b/.travis.yml
index c383870..63db043 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,11 @@
 notifications:
   disable: true
 rvm:
-  - 1.8.7
+  - 1.8.7 # (current default)
   - 1.9.2
-  - rbx
-  - ree
+  - 1.9.3
+  - rbx-2.0
   - jruby
+  - ruby-head
+  - ree
 script: "bundle exec rake spec spec:acceptance"