diff --git a/app/controllers/installations_controller.rb b/app/controllers/installations_controller.rb
index dd7253f2b..20dd25e40 100644
--- a/app/controllers/installations_controller.rb
+++ b/app/controllers/installations_controller.rb
@@ -37,7 +37,7 @@ class InstallationsController < ApplicationController
         # 注册bot对应oauth应用
         Doorkeeper::Application.create!(name: @bot.name, uid: @bot.client_id, secret: @bot.client_secret, redirect_uri: "https://gitlink.org.cn")
         # 注册bot对应用户
-        result = autologin_register(User.generate_user_login('b'), nil, "b58333123413", 'bot', nickname: @bot.name)
+        result = autologin_register(User.generate_user_login('b'), nil, "#{SecureRandom.hex(6)}", 'bot', nickname: @bot.name)
         tip_exception(-1, result[:message]) if result[:message].present?
         @bot.uid = result[:user][:id]
         @bot.save