1 files changed, 4 insertions, 2 deletions
diff --git a/synapse/storage/databases/main/deviceinbox.py b/synapse/storage/databases/main/deviceinbox.py
index 422e0e65ca..45fe58c104 100644
--- a/synapse/storage/databases/main/deviceinbox.py
+++ b/synapse/storage/databases/main/deviceinbox.py
@@ -128,7 +128,7 @@ class DeviceInboxWorkerStore(SQLBaseStore):
             prefilled_cache=device_outbox_prefill,
         )
 
-    def process_replication_rows(
+    async def process_replication_rows(
         self,
         stream_name: str,
         instance_name: str,
@@ -148,7 +148,9 @@ class DeviceInboxWorkerStore(SQLBaseStore):
                     self._device_federation_outbox_stream_cache.entity_has_changed(
                         row.entity, token
                     )
-        return super().process_replication_rows(stream_name, instance_name, token, rows)
+        return await super().process_replication_rows(
+            stream_name, instance_name, token, rows
+        )
 
     def get_to_device_stream_token(self) -> int:
         return self._device_inbox_id_gen.get_current_token()