.travis.yml in verdict-0.3.2 vs .travis.yml in verdict-0.4.0

@@ -3,10 +3,10 @@
 rvm:
   - 1.9.3
   - 2.0.0
   - 2.1.0
   - ruby-head
-  - rbx
+  - rbx-2.2.6
   - jruby-19mode
 matrix:
   allow_failures:
     - rvm: ruby-head
 services: