diff --git a/.travis.yml b/.travis.yml
index 2c9c8da..483ea23 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,7 @@
 language: ruby
+os:
+  - linux
+  - osx
 
 before_install:
   - gem install bundler -v 1.12.5
@@ -14,4 +17,4 @@ matrix:
   allow_failures:
     - rvm: ruby-head
     - rvm: rbx-19mode
-    - rvm: jruby-19mode
\ No newline at end of file
+    - rvm: jruby-19mode