diff --git a/.travis.yml b/.travis.yml
index c0dc070..9eaf43c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,6 +13,7 @@ php:
 matrix:
   allow_failures:
     - php: nightly
+    - php: hhvm
 
 install:
   - composer install --prefer-source