diff --git a/src/Symfony/Component/Config/composer.json b/src/Symfony/Component/Config/composer.json
index f1633c1c80..47f8642ae6 100644
--- a/src/Symfony/Component/Config/composer.json
+++ b/src/Symfony/Component/Config/composer.json
@@ -19,6 +19,9 @@
         "php": ">=5.3.9",
         "symfony/filesystem": "~2.3"
     },
+    "require-dev": {
+        "symfony/yaml": "~2.7"
+    },
     "suggest": {
         "symfony/yaml": "To use the yaml reference dumper"
     },