diff --git a/composer.json b/composer.json
index b2fa7e38b42bf1466a3468455ca876f06c8c78ee..dfbacef63d21f9cd4dd3b268cb563306a5b62ff1 100644
--- a/composer.json
+++ b/composer.json
@@ -37,7 +37,7 @@
     "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
-            "dev-master": "5.0-dev"
+            "dev-master": "5.1-dev"
         }
     }
 }