diff --git a/.travis.yml b/.travis.yml
index 0f02b69..6329a75 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,14 @@
 language: php
 php:
     - 5.4
+    - 5.5
+    - 5.6
+    - hhvm
+
 before_script:
-    - composer install
+  - wget http://getcomposer.org/composer.phar
+  - php composer.phar --prefer-source --dev install
+  - cp phpunit.xml.dist phpunit.xml
+
+script:
+  - ./vendor/bin/phpunit -c ./