--- /opt/aitbc/apps/blockchain-node/src/aitbc_chain/gossip/broker.py	2026-03-23 12:40:00.000000000 +0100
+++ /opt/aitbc/apps/blockchain-node/src/aitbc_chain/gossip/broker.py.new	2026-03-23 12:40:00.000000000 +0100
@@ -6,7 +6,7 @@
 import warnings
 from collections import defaultdict
-from contextlib import suppress
+from contextlib import suppress, asynccontextmanager
 from dataclasses import dataclass
 from typing import Any, Callable, Dict, List, Optional, Set