diff --git a/relay/client_connection.py b/relay/client_connection.py
index e7ebe34..8b5fdfd 100644
--- a/relay/client_connection.py
+++ b/relay/client_connection.py
@@ -121,6 +121,8 @@ class NostrClientConnection:
             }
 
             event = NostrEvent(**event_dict)
+            # Set the size field from the size_bytes property
+            event.size = event.size_bytes
             await self._handle_event(event)
             return []
         if message_type == NostrEventType.REQ:
diff --git a/relay/event.py b/relay/event.py
index 7154ece..8cee1b9 100644
--- a/relay/event.py
+++ b/relay/event.py
@@ -23,6 +23,7 @@ class NostrEvent(BaseModel):
     tags: list[list[str]] = Field(default=[], no_database=True)
     content: str = ""
     sig: str
+    size: int = 0
 
     def nostr_dict(self) -> dict:
         _nostr_dict = dict(self)