diff --git a/.travis.yml b/.travis.yml
index 9592f40..b59edb5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,9 @@
+language: ruby
 rvm:
   - 1.8.7
   - 1.9.2
-  - jruby
+  - 1.9.3
+  - jruby-18mode
+  - jruby-19mode
+  - rbx-18mode
   - ree