1 files changed, 1 insertions, 1 deletions

diff --git a/synapse/http/server.py b/synapse/http/server.py

index 051a1899a0..4605404891 100644
--- a/synapse/http/server.py
+++ b/synapse/http/server.py
@@ -757,7 +757,7 @@ def respond_with_json(
     if send_cors:
         set_cors_headers(request)
 
-    run_in_background(
+    run_in_background( # type: ignore[unused-awaitable]
         _async_write_json_to_request_in_thread, request, encoder, json_object
     )
     return NOT_DONE_YET