diff --git a/services/attach/index.ts b/services/attach/index.ts
index d423b13..15fb8c4 100644
--- a/services/attach/index.ts
+++ b/services/attach/index.ts
@@ -28,11 +28,7 @@ class AttachService extends NetToolBase {
    * @returns {Promise<void>} 返回空。
    */
   async proxyMiChatEvent(body: LarkEvent.Data) {
-    const hostList = [
-      "michat-staging.ai.srv",
-      "michat-preview.ai.srv",
-      "michat.ai.srv",
-    ]
+    const hostList = ["michat-staging.ai.srv", "michat.ai.srv"]
     const path = "/api/v1/bypass/robot_event_callback"
     for (const host of hostList) {
       const URL = `http://${host}${path}`