diff --git a/.travis.yml b/.travis.yml
index d2505524..a00d7a21 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,9 @@ language: cpp
 compiler: 
   - gcc
   - clang
+os:
+  - linux
+  - osx
 sudo: true
 before_script:
   - sudo apt-get install gcc-multilib g++-multilib