diff --git a/.travis.yml b/.travis.yml
index 1ff7c8744..1a10b4284 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,9 @@ go:
   - 1.4.2
   - 1.5
   - tip
+os:
+  - linux
+  - osx
 matrix:
   allow_failures:
     - go: tip