diff --git a/.travis.yml b/.travis.yml
index fe47b94..729b036 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,10 @@ rust:
 - stable
 - nightly
 
+os:
+- linux
+- windows
+
 script:
 - cargo build --all
 - cargo test --all