diff --git a/synapse/replication/tcp/streams/_base.py b/synapse/replication/tcp/streams/_base.py
index 398bebeaa659..e01155ad597b 100644
--- a/synapse/replication/tcp/streams/_base.py
+++ b/synapse/replication/tcp/streams/_base.py
@@ -361,6 +361,7 @@ class ReceiptsStreamRow:
         receipt_type: str
         user_id: str
         event_id: str
+        thread_id: Optional[str]
         data: dict
 
     NAME = "receipts"
diff --git a/synapse/storage/databases/main/receipts.py b/synapse/storage/databases/main/receipts.py
index ddb8e80b69be..98155391588e 100644
--- a/synapse/storage/databases/main/receipts.py
+++ b/synapse/storage/databases/main/receipts.py
@@ -540,7 +540,9 @@ def _get_users_sent_receipts_between_txn(txn: LoggingTransaction) -> List[str]:
 
     async def get_all_updated_receipts(
         self, instance_name: str, last_id: int, current_id: int, limit: int
-    ) -> Tuple[List[Tuple[int, list]], int, bool]:
+    ) -> Tuple[
+        List[Tuple[int, Tuple[str, str, str, str, Optional[str], JsonDict]]], int, bool
+    ]:
         """Get updates for receipts replication stream.
 
         Args:
@@ -567,9 +569,13 @@ async def get_all_updated_receipts(
 
         def get_all_updated_receipts_txn(
             txn: LoggingTransaction,
-        ) -> Tuple[List[Tuple[int, list]], int, bool]:
+        ) -> Tuple[
+            List[Tuple[int, Tuple[str, str, str, str, Optional[str], JsonDict]]],
+            int,
+            bool,
+        ]:
             sql = """
-                SELECT stream_id, room_id, receipt_type, user_id, event_id, data
+                SELECT stream_id, room_id, receipt_type, user_id, event_id, thread_id, data
                 FROM receipts_linearized
                 WHERE ? < stream_id AND stream_id <= ?
                 ORDER BY stream_id ASC
@@ -578,8 +584,8 @@ def get_all_updated_receipts_txn(
             txn.execute(sql, (last_id, current_id, limit))
 
             updates = cast(
-                List[Tuple[int, list]],
-                [(r[0], r[1:5] + (db_to_json(r[5]),)) for r in txn],
+                List[Tuple[int, Tuple[str, str, str, str, Optional[str], JsonDict]]],
+                [(r[0], r[1:6] + (db_to_json(r[6]),)) for r in txn],
             )
 
             limited = False
diff --git a/tests/replication/tcp/streams/test_receipts.py b/tests/replication/tcp/streams/test_receipts.py
index eb0011784518..223791dc203d 100644
--- a/tests/replication/tcp/streams/test_receipts.py
+++ b/tests/replication/tcp/streams/test_receipts.py
@@ -48,6 +48,7 @@ def test_receipt(self):
         self.assertEqual("m.read", row.receipt_type)
         self.assertEqual(USER_ID, row.user_id)
         self.assertEqual("$event:blue", row.event_id)
+        self.assertIsNone(row.thread_id)
         self.assertEqual({"a": 1}, row.data)
 
         # Now let's disconnect and insert some data.