diff --git a/.travis.yml b/.travis.yml
index 03f0a05..4585def 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,3 +11,5 @@ php:
   - 5.3
   # aliased to a recent 5.4.x version
   - 5.4
+
+script: phpunit tests/