diff --git a/.travis.yml b/.travis.yml
index bb886b8..796b40c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,10 @@ language: go
 
 sudo: false
 
+os:
+- linux
+- osx
+
 go:
 - 1.2.2
 - 1.3.3