diff --git a/.travis.yml b/.travis.yml
index 54b3ce27..16be23cd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,12 @@
 rvm:
   - 1.9.3
   - 2.0.0
-  - 2.1.0
+  - 2.1.8
+  - 2.2.4
+  - 2.3.0
+  - ruby-head
 before_install:
-  - gem install bundler
\ No newline at end of file
+  - gem install bundler
+matrix:
+  allow_failures:
+    - rvm: ruby-head
\ No newline at end of file