diff --git a/.travis.yml b/.travis.yml
index f607374..045cffa 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,7 +17,9 @@ matrix:
     fast_finish: true
 
 before_install:
+  - if ! [[ "$TRAVIS_PHP_VERSION" == hhvm* ]]; then echo "memory_limit=-1" >> ~/.phpenv/versions/$(phpenv version-name)/etc/conf.d/travis.ini; fi;
   - composer self-update
+  - if ! [[ "$TRAVIS_PHP_VERSION" == hhvm* ]]; then phpenv config-rm xdebug.ini; fi;
 
 install:
   - composer install