diff --git a/composer.json b/composer.json
index dc1edc4137..4c159f5739 100644
--- a/composer.json
+++ b/composer.json
@@ -92,7 +92,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "5.0.x-dev"
+            "dev-master": "5.1.x-dev"
         }
     },
     "scripts": {