diff --git a/config/routes.yaml b/config/routes.yaml
index 41ef814..5394777 100644
--- a/config/routes.yaml
+++ b/config/routes.yaml
@@ -3,3 +3,6 @@ controllers:
         path: ../src/Controller/
         namespace: App\Controller
     type: attribute
+    # this prefix using in official build URLs.
+    # replace to / if you hosted YGGtracker instance in the document root
+    prefix: '/yggtracker'