--- a/app.go	Fri Sep 07 21:49:44 2018 +0200
+++ b/app.go	Wed Sep 19 20:52:48 2018 +0200
@@ -71,7 +71,7 @@
 	}
 
 	var app registerApp
-	if err := mc.apiCall("apps", rest.Post, params, nil, nil, &app); err != nil {
+	if err := mc.apiCall("v1/apps", rest.Post, params, nil, nil, &app); err != nil {
 		return nil, err
 	}