diff --git a/.travis.yml b/.travis.yml
index 98c31725ef..9dfede2722 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,5 +2,10 @@ language: csharp
 sudo: false
 mono:
   - alpha
+env:
+  - MONO_THREADS_PER_CPU=2000
+os:
+  - linux
+  - osx
 script:
   - ./build.sh --quiet verify
\ No newline at end of file