diff --git a/src/Symfony/Bridge/ProxyManager/composer.json b/src/Symfony/Bridge/ProxyManager/composer.json
index c4a59154ce..449553c0f3 100644
--- a/src/Symfony/Bridge/ProxyManager/composer.json
+++ b/src/Symfony/Bridge/ProxyManager/composer.json
@@ -21,7 +21,7 @@
         "ocramius/proxy-manager": ">=0.3.1,<0.4-dev"
     },
     "require-dev": {
-        "symfony/config": "2.3"
+        "symfony/config": "~2.3"
     },
     "autoload": {
         "psr-0": {