1 files changed, 3 insertions, 0 deletions
diff --git a/synapse/events/utils.py b/synapse/events/utils.py
index f4da9e0923..a0c07f62f4 100644
--- a/synapse/events/utils.py
+++ b/synapse/events/utils.py
@@ -126,6 +126,9 @@ def prune_event_dict(room_version: RoomVersion, event_dict: dict) -> dict:
         if room_version.msc2176_redaction_rules:
             add_fields("invite")
 
+        if room_version.msc2716_historical:
+            add_fields("historical")
+
     elif event_type == EventTypes.Aliases and room_version.special_case_aliases_auth:
         add_fields("aliases")
     elif event_type == EventTypes.RoomHistoryVisibility: