diff --git a/.travis.yml b/.travis.yml
index e5bc9e4..bc08f91 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,6 +10,9 @@ php:
   - 5.3
   - 5.4
   - 5.5
+  - 5.6
+  - hhvm
+  - 7.0
 
 install:
   - composer install --prefer-dist