diff --git a/src/Symfony/Component/Console/composer.json b/src/Symfony/Component/Console/composer.json
index 8fb9bdf7d8..e370f91eae 100644
--- a/src/Symfony/Component/Console/composer.json
+++ b/src/Symfony/Component/Console/composer.json
@@ -21,6 +21,7 @@
         "symfony/debug": "~3.4|~4.0"
     },
     "require-dev": {
+        "symfony/config": "~3.4|~4.0",
         "symfony/http-kernel": "~3.4|~4.0",
         "symfony/event-dispatcher": "~3.4|~4.0",
         "symfony/dependency-injection": "~3.4|~4.0",