diff --git a/.travis.yml b/.travis.yml
index 7fcfd1817..4f917d398 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,6 +5,8 @@ rvm:
   - 2.0.0
   - 2.1.0
   - 2.2.1
+  - 2.2.3
+  - rbx-2
   - ruby-head
   - ree
   - jruby-18mode