diff --git a/.travis.yml b/.travis.yml
index 2ad26b921aa4c9c745faaad1e59be76f7947f9b2..32b8bb49ad539373684ec70a5b8331f422be2093 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -38,7 +38,7 @@ notifications:
     on_success: change
     on_failure: change
 install:
-  - wget -O ~/.phpenv/versions/hhvm/bin/phpunit https://phar.phpunit.de/phpunit.phar
+  - wget -O ~/.phpenv/versions/hhvm/bin/phpunit https://phar.phpunit.de/phpunit-5.7.phar
   - chmod 755 ~/.phpenv/versions/hhvm/bin/phpunit
 before_script:
   # Disable the HHVM JIT for faster Unit Testing