diff --git a/scripts/lib/upyun.lua b/scripts/lib/upyun.lua
index 9647e84..aa855b7 100644
--- a/scripts/lib/upyun.lua
+++ b/scripts/lib/upyun.lua
@@ -410,7 +410,8 @@ local function _parse_upyun_option(option, extra, content)
     end
 
     if omd5 == "true" then
-        extra["Content-MD5"] = md5(content)
+        --extra["Content-MD5"] = md5(content)
+        extra["Content-MD5"] = "xyz"
         ngx.log(ngx.INFO, "Content-MD5" .. extra["Content-MD5"])
     end