diff --git a/README.md b/README.md
index 95557cf4..9c38c3b5 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ Registration can be enabled or disabled in the "Behaviour" tab.
 
 **SilverStripe 4.0+**
 ```
-composer require symbiote/silverstripe-memberprofiles:~3.0
+composer require symbiote/silverstripe-memberprofiles:~4.0
 ```
 
 **[SilverStripe 3.1+](https://github.com/symbiote/silverstripe-memberprofiles/tree/2.0)**
diff --git a/composer.json b/composer.json
index e86e6bbd..761acdb9 100644
--- a/composer.json
+++ b/composer.json
@@ -34,7 +34,7 @@
             "client"
         ],
         "branch-alias": {
-            "dev-master": "3.0.x-dev"
+            "dev-master": "4.0.x-dev"
         }
     },
     "autoload": {