diff --git a/src/asr/provider/volcengine/auc.ts b/src/asr/provider/volcengine/auc.ts
index 8ac970f..b05afc2 100644
--- a/src/asr/provider/volcengine/auc.ts
+++ b/src/asr/provider/volcengine/auc.ts
@@ -1,3 +1,4 @@
+// https://git.xiongxiao.me/kevisual/video-tools/raw/branch/main/src/asr/provider/volcengine/auc.ts
 import { nanoid } from "nanoid"
 
 export const FlashURL = "https://openspeech.bytedance.com/api/v3/auc/bigmodel/recognize/flash"