diff --git a/composer.json b/composer.json
index b64691c..2c6ef7a 100644
--- a/composer.json
+++ b/composer.json
@@ -54,10 +54,5 @@
         "psr-4": { "Zenstruck\\ScheduleBundle\\Tests\\": "tests/" }
     },
     "minimum-stability": "dev",
-    "prefer-stable": true,
-    "extra": {
-        "branch-alias": {
-            "dev-master": "1.x-dev"
-        }
-    }
+    "prefer-stable": true
 }