diff --git a/.travis.yml b/.travis.yml
index 19ef02b..f741543 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,5 +5,9 @@ rust:
   - beta
   - stable
 
+script:
+  - cargo test
+  - cargo test --features="elcapitan"
+
 notifications:
   webhooks: http://build.servo.org:54856/travis