diff --git a/caldav_sync/__manifest__.py b/caldav_sync/__manifest__.py
index fba9cf5..ab5c20a 100644
--- a/caldav_sync/__manifest__.py
+++ b/caldav_sync/__manifest__.py
@@ -8,7 +8,7 @@
 
 {
     "name": "CalDAV Synchronization",
-    "version": "18.0.0.6.3",
+    "version": "18.0.0.7.0",
     "license": "LGPL-3",
     "category": "Productivity",
     "summary": "Synchronize Odoo Calendar Events with CalDAV Servers",
diff --git a/caldav_sync/models/calendar_event.py b/caldav_sync/models/calendar_event.py
index 42245dd..4fb38e1 100644
--- a/caldav_sync/models/calendar_event.py
+++ b/caldav_sync/models/calendar_event.py
@@ -584,11 +584,11 @@ class CalendarEvent(models.Model):
 
     @api.model
     def _sync_event_from_ical(
-        self, ical_event: icalendar.cal.Event, user: User
+            self, ical_event: icalendar.cal.Event, user: User
     ) -> CalendarEvent:
         """Given an iCalendar event, compare the event with any existing
         Odoo event that it matches and synchronize the changes. If no event
-        exists, create one.
+        exists, create one iff the event is in the future.
 
         :param ical_event: The iCalendar event to synchronize with Odoo.
         :param user: The res.user record for whom to synchronize the event.
@@ -609,12 +609,15 @@ class CalendarEvent(models.Model):
             existing_instance = self._get_existing_instance(uid, recurrence_id)
             outdated = self._get_outdated(component, existing_instance, synced_events)
             owned = (
-                existing_instance and existing_instance.partner_id == user.partner_id
+                    existing_instance and existing_instance.partner_id == user.partner_id
             )
             # Pass for_creation=True only when creating a new event
             values = self._get_values_from_ical_component(component, user, for_creation=not existing_instance)
             recurrency_vals = self._get_recurrency_values_from_ical_event(component)
             if not existing_instance:
+                # If the event is in the past, we just ignore it.
+                if values.get("stop") < datetime.now(tz=None):
+                    continue
                 # If we're creating an instance and it doesn't follow the recurrence,
                 # just scrap the recurrency vals, they're not useful
                 if not recurrency_vals.get("follow_recurrence"):
diff --git a/caldav_sync/tests/test_calendar.py b/caldav_sync/tests/test_calendar.py
index 5be48d7..093b91f 100644
--- a/caldav_sync/tests/test_calendar.py
+++ b/caldav_sync/tests/test_calendar.py
@@ -25,7 +25,7 @@ def _get_ics_path(filename):
 
 
 @contextmanager
-def _patch_caldav_with_events_from_ics(ics_paths, user, last_modified=None):
+def _patch_caldav_with_events_from_ics(ics_paths, user, last_modified=None, futurize=True):
     with (
         patch("caldav.DAVClient") as MockDAVClient,
         patch("caldav.Calendar") as MockCalendar,
@@ -46,8 +46,8 @@ def _patch_caldav_with_events_from_ics(ics_paths, user, last_modified=None):
         # Get or create the mock calendar for this user
         mock_calendar = calendar_side_effect(user.caldav_calendar_url)
 
-        def event_by_uid_side_effect(self, uid):
-            for event in self.events():
+        def event_by_uid_side_effect(uid):
+            for event in mock_calendar.events():
                 if str(event.icalendar_component.get("uid")) == uid:
                     return event
             return DEFAULT
@@ -66,6 +66,18 @@ def _patch_caldav_with_events_from_ics(ics_paths, user, last_modified=None):
                     if subcomponent.name == "VEVENT":
                         subcomponent["last-modified"] = icalendar.vDate(last_modified)
                         subcomponent["dtstamp"] = icalendar.vDate(last_modified)
+        if futurize:
+            for event in ical_events:
+                for subcomponent in event.subcomponents:
+                    if subcomponent.name == "VEVENT":
+                        start = subcomponent.get("dtstart") and subcomponent.decoded("dtstart")
+                        end = subcomponent.get("dtend") and subcomponent.decoded("dtend")
+                        if isinstance(start, datetime) and isinstance(end, datetime):
+                            duration = end - start
+                        else:
+                            duration = timedelta(hours=1)
+                        subcomponent["dtstart"] = icalendar.vDDDTypes(datetime.now())
+                        subcomponent["dtend"] = icalendar.vDDDTypes(datetime.now() + duration)
 
         base_events = [event for event in ical_events if not event.get("recurrence-id")]
         for base_event in base_events:
@@ -123,6 +135,16 @@ class TestCalendarEvent(TransactionCase, CaldavTestCommon):
             new_events = events_after_sync - current_events
             self.assertEqual(len(new_events), 1)
 
+    def test_basic_past_event_from_server_no_create(self):
+        user = self.user_1
+        ics_path = _get_ics_path("basic.ics")
+        with _patch_caldav_with_events_from_ics(ics_path, user, futurize=False):
+            current_events = self.env["calendar.event"].search([])
+            self.env["calendar.event"].poll_caldav_server()
+            events_after_sync = self.env["calendar.event"].search([])
+            new_events = events_after_sync - current_events
+            self.assertEqual(len(new_events), 0)
+
     def test_basic_event_from_server_update(self):
         user = self.user_1
         ics_path = _get_ics_path("basic.ics")
@@ -239,6 +261,7 @@ class TestCalendarEvent(TransactionCase, CaldavTestCommon):
         self.assertIn(user2.partner_id, event.partner_ids)
         self.assertIn(user3.partner_id, event.partner_ids)
 
+
     def test_multiple_user_attendees_event_from_server_update(self):
         """Test event has (as in above test):
         Organizer: user1 (test1@example.com)