diff --git a/composer.json b/composer.json
index d5fceba..fee82b1 100644
--- a/composer.json
+++ b/composer.json
@@ -36,11 +36,5 @@
         "psr-4": {
             "DotTest\\Session\\": "test/"
         }
-    },
-    "extra": {
-        "branch-alias": {
-            "dev-master": "4.0-dev",
-            "dev-develop": "4.1-dev"
-        }
     }
 }