From 7a9c38ed0f1302f9064962ed3f951a41ca6a9bd3 Mon Sep 17 00:00:00 2001
From: LHMQ878 <72402929@cityu-dg.edu.cn>
Date: Fri, 7 Aug 2026 11:21:46 +0800
Subject: [PATCH] fix(proxy): place mutable-ok on OpenAI WS headers dict
 literal

---
 .../proxy/pass_through_endpoints/llm_passthrough_endpoints.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/litellm/proxy/pass_through_endpoints/llm_passthrough_endpoints.py b/litellm/proxy/pass_through_endpoints/llm_passthrough_endpoints.py
index 9ff71c77130..9ef5f22ec4b 100644
--- a/litellm/proxy/pass_through_endpoints/llm_passthrough_endpoints.py
+++ b/litellm/proxy/pass_through_endpoints/llm_passthrough_endpoints.py
@@ -1970,9 +1970,9 @@ async def openai_websocket_proxy_route(
     wss_target: Final = (
         f"{wss_base}{'&' if '?' in wss_base else '?'}{query_string}" if query_string else wss_base
     )
-    custom_headers: Final = {
+    custom_headers: Final = {  # mutable-ok: websocket_passthrough_request requires a plain dict of upstream headers
         "Authorization": f"Bearer {openai_api_key}"
-    }  # mutable-ok: websocket_passthrough_request requires a plain dict of upstream headers
+    }
 
     await websocket_passthrough_request(
         websocket=websocket,