diff --git a/.travis.yml b/.travis.yml
index 49bec80..af0b14b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,11 @@ language: rust
 
 rust:
   - nightly
+  - 1.1.0
+
+os:
+  - linux
+  - osx
 
 script:
-  - rustc src/lib.rs
+  - cargo build