diff --git a/.travis.yml b/.travis.yml
index 17b8453..2ce5081 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,6 +10,7 @@ matrix:
     - php: hhvm
 
 before_script:
+  - if [[ $TRAVIS_PHP_VERSION = hhv* ]]; then echo hhvm.php7.all=1 >> /etc/hhvm/php.ini; fi
   - composer install
 
 script: