diff --git a/composer.json b/composer.json
index d48ef4d4e..0b2b72675 100755
--- a/composer.json
+++ b/composer.json
@@ -12,11 +12,6 @@
         "phpunit/phpunit": "^5.7",
         "squizlabs/php_codesniffer": "^3.0"
     },
-    "extra": {
-        "branch-alias": {
-            "3.x-dev": "3.3.x-dev"
-        }
-    },
     "autoload": {
         "psr-4": {
             "SilverStripe\\GraphQL\\": "src/",