diff --git a/app/models/event_presenter_models.py b/app/models/event_presenter_models.py
index 9fde31f..6e019a0 100644
--- a/app/models/event_presenter_models.py
+++ b/app/models/event_presenter_models.py
@@ -156,6 +156,7 @@ class Event_Presenter_Base(BaseModel):
     event_track_name: Optional[str]
 
     person_external_id: Optional[str]
+    person_external_sys_id: Optional[str]
     person_given_name: Optional[str]
     person_family_name: Optional[str]
     person_professional_title: Optional[str]