1 files changed, 1 insertions, 0 deletions
diff --git a/synapse/events/__init__.py b/synapse/events/__init__.py
index bd3ffb59cc..7103b937af 100644
--- a/synapse/events/__init__.py
+++ b/synapse/events/__init__.py
@@ -94,6 +94,7 @@ class EventBase(object):
     event_id = _event_dict_property("event_id")
     hashes = _event_dict_property("hashes")
     origin = _event_dict_property("origin")
+    origin_server_ts = _event_dict_property("origin_server_ts")
     prev_events = _event_dict_property("prev_events")
     prev_state = _event_dict_property("prev_state")
     room_id = _event_dict_property("room_id")