diff --git a/src/Symfony/Component/EventDispatcher/composer.json b/src/Symfony/Component/EventDispatcher/composer.json
index 6343b5d1d9..3715ece302 100644
--- a/src/Symfony/Component/EventDispatcher/composer.json
+++ b/src/Symfony/Component/EventDispatcher/composer.json
@@ -20,6 +20,7 @@
     },
     "require-dev": {
         "symfony/dependency-injection": "~2.0",
+        "symfony/config": "~2.0",
         "symfony/stopwatch": "~2.2",
         "psr/log": "~1.0"
     },