diff --git a/.travis.yml b/.travis.yml
index 3632ba6..f0e0916 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,10 @@ language: rust
 dist: trusty
 sudo: true
 
+os:
+- linux
+- osx
+
 rust:
   - stable
   - beta