From 85a808606fe0f27ca8b795a394f4ae69e8e403a3 Mon Sep 17 00:00:00 2001
From: David Robertson <davidr@element.io>
Date: Thu, 7 Apr 2022 17:54:18 +0100
Subject: [PATCH] Add annotation which would have caught #12410

Can't use `args: QueryParams` here because QueryParams is a Mapping,
which is immutable.
---
 synapse/federation/transport/client.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/synapse/federation/transport/client.py b/synapse/federation/transport/client.py
index 0ea4688e29c2..01dc5ca94f99 100644
--- a/synapse/federation/transport/client.py
+++ b/synapse/federation/transport/client.py
@@ -504,7 +504,7 @@ async def get_public_rooms(
         else:
             path = _create_v1_path("/publicRooms")
 
-            args: Dict[str, Any] = {
+            args: Dict[str, Union[str, Iterable[str]]] = {
                 "include_all_networks": "true" if include_all_networks else "false"
             }
             if third_party_instance_id: