diff --git a/composer.json b/composer.json
index a83934f40..743a63e1c 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
     "require": {
         "php": ">=5.3.3",
         "symfony/symfony": "~2.5",
-        "doctrine/orm": "~2.5@dev",
+        "doctrine/orm": "dev-master@dev",
         "doctrine/dbal": "~2.5@dev",
         "doctrine/common": "~2.4@dev",
         "doctrine/doctrine-bundle": "~1.2@dev",