diff --git a/.travis.yml b/.travis.yml
index 5c23715f5..bae863c3d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,7 +6,12 @@ php:
     - 5.4
     - 5.5
     - 5.6
-
+    - hhvm
+ 
+matrix:
+    allow_failures:
+        - php: hhvm
+        
 before_script:
     - COMPOSER_ROOT_VERSION=dev-master composer install --dev --prefer-source