diff --git a/src/onebot11/server/ws/ReverseWebsocket.ts b/src/onebot11/server/ws/ReverseWebsocket.ts
index 24e755e20..bd96a1b0f 100644
--- a/src/onebot11/server/ws/ReverseWebsocket.ts
+++ b/src/onebot11/server/ws/ReverseWebsocket.ts
@@ -87,6 +87,7 @@ export class ReverseWebsocket {
         'X-Self-ID': selfInfo.uin,
         'Authorization': `Bearer ${token}`,
         'x-client-role': 'Universal',  // koishi-adapter-onebot 需要这个字段
+        "User-Agent": "OneBot/11",
       }
     });
     registerWsEventSender(this.websocket);