diff --git a/composer.json b/composer.json
index 9544761..0d73b0b 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
     "extra": {
         "class": "SilverStripe\\VendorPlugin\\VendorPlugin",
         "branch-alias": {
-            "dev-master": "1.3.x-dev"
+            "1.x-dev": "1.3.x-dev"
         }
     },
     "scripts": {