diff --git a/composer.json b/composer.json
index 14fc5af95..0a887a2d0 100644
--- a/composer.json
+++ b/composer.json
@@ -57,5 +57,7 @@
     },
     "extra": {
         "app-migrations-dir": "Resources/test/Fixtures/App/DoctrineMigrations"
-    }
+    },
+    "minimum-stability": "dev",
+    "prefer-stable": true
 }