diff --git a/scripts/upt.lua b/scripts/upt.lua
index 0eb7dfa..a50e3f7 100644
--- a/scripts/upt.lua
+++ b/scripts/upt.lua
@@ -1,8 +1,4 @@
+package.path = package.path .. ';<SCRIPT_PATH>/?.lua';
+local upt = require("lib.upt")
 local uri = ngx.unescape_uri(ngx.var.arg_uri)
-local secret = ngx.var.upt_secret
-local duration = ngx.var.upt_duration
-local etime = os.time() + duration
-local sign = ngx.md5(secret .. '&' .. etime .. '&' .. uri)
-ngx.log(ngx.ERR, 'sign...' .. sign .. ' etime..' .. etime)
-local upt = string.sub(sign, 13, 13 + 7) .. etime
-ngx.say(upt)
\ No newline at end of file
+ngx.say(upt.upt(uri))
\ No newline at end of file