diff --git a/composer.json b/composer.json
index f30948e..2118f59 100644
--- a/composer.json
+++ b/composer.json
@@ -21,11 +21,6 @@
     "require-dev": {
         "phpunit/phpunit": "^5.7"
     },
-    "extra": {
-        "branch-alias": {
-            "dev-master": "2.0.x-dev"
-        }
-    },
     "autoload": {
         "psr-4": {
             "SilverStripe\\PostgreSQL\\": "code/",