diff --git a/membershipworks/tasks/scrape.py b/membershipworks/tasks/scrape.py
index f08505f..1d196a3 100644
--- a/membershipworks/tasks/scrape.py
+++ b/membershipworks/tasks/scrape.py
@@ -178,3 +178,6 @@ def scrape_events():
             event_ext.details = membershipworks.get_event_by_eid(event.eid)
             event_ext.registrations = membershipworks.get_event_registrations(event.eid)
             event_ext.save()
+
+    # delete all events that did not occur in the event list
+    EventExt.objects.exclude(pk__in=events).delete()