diff --git a/composer.json b/composer.json
index bf1c4177409..7ba6ff5f1de 100644
--- a/composer.json
+++ b/composer.json
@@ -45,6 +45,7 @@
         "jms/di-extra-bundle": "~1.7",
         "sensio/generator-bundle": "~2.3|~3.0",
         "symfony/yaml": "~2.3|~3.0",
+        "phpunit/phpunit": "^5.3",
         "sonata-project/intl-bundle": "^2.2.4",
         "symfony/phpunit-bridge": "~2.7|~3.0"
     },