diff --git a/vmix/vmix_service.py b/vmix/vmix_service.py
index a23dd6e..5e56d5e 100644
--- a/vmix/vmix_service.py
+++ b/vmix/vmix_service.py
@@ -51,6 +51,7 @@ def change_vmix_datasource_urls(
     new_base_url: str,
     session_token: str,
     match_id: str | int | None = None,
+    operator_login: str | None = None,
 ) -> bytes:
     if isinstance(xml_data, dict):
         candidate = None