diff --git a/.travis.yml b/.travis.yml
index 8b53bf22..c35625b1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,6 +6,12 @@ php:
   - 5.3
   - 5.4
   - 5.5
+  - 5.6
+  - hhvm
+ 
+matrix:
+    allow_failures:
+        - php: hhvm
 
 script:
  - phpunit -c ./unitTests/