diff --git a/.travis.yml b/.travis.yml
index 2978e8cc..fe5f8ae1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,6 +10,7 @@ rvm:
   - 1.8.7
   - 1.9.2
   - 1.9.3
-  - jruby
-  - rbx
-  - ree
+  - jruby-18mode
+  - jruby-19mode
+  - rbx-18mode
+  - rbx-19mode