diff --git a/composer.json b/composer.json
index a0cbd62..1285020 100644
--- a/composer.json
+++ b/composer.json
@@ -49,7 +49,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "3.x-dev"
+            "dev-master": "4.x-dev"
         }
     },
     "replace": {