diff --git a/.travis.yml b/.travis.yml
index 23902b4..6b4c709 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,13 @@
 language: php
 php:
+  - 5.6
   - 5.5
   - 5.4
   - 5.3
+  - hhvm
+
+matrix:
+  allow_failures:
+    - php: 5.6
+    - php: hhvm
+  fast_finish: true