.travis.yml in mongoid-history-0.4.4 vs .travis.yml in mongoid-history-0.4.5

@@ -1,15 +1,17 @@
 services: mongodb
 
+sudo: false
+
 language: ruby
 
 cache: bundler
 
 rvm:
   - 2.1.1
   - 2.0.0
   - 1.9.3
-  - rbx-2
+  - rbx-2.2.10
   - jruby-19mode
 
 env:
   - MONGOID_VERSION=3
   - MONGOID_VERSION=4