diff --git a/livekit-agents/livekit/agents/ipc/proc_main.py b/livekit-agents/livekit/agents/ipc/proc_main.py
index df694bd0d..6d8ead956 100644
--- a/livekit-agents/livekit/agents/ipc/proc_main.py
+++ b/livekit-agents/livekit/agents/ipc/proc_main.py
@@ -57,6 +57,8 @@ def emit(self, record: logging.LogRecord) -> None:
             record.exc_text = None
             record.stack_info = None
 
+            # https://websockets.readthedocs.io/en/stable/topics/logging.html#logging-to-json
+            # webosckets library add "websocket" attribute to log records, which is not pickleable
             if hasattr(record, "websocket"):
                 record.websocket = None