diff --git a/3rd/lua/README b/3rd/lua/README
index 7f1c0cad..7c19955f 100644
--- a/3rd/lua/README
+++ b/3rd/lua/README
@@ -2,4 +2,4 @@ This is a modify version of lua 5.5 .
 
 For detail ,
   Shared Proto : http://lua-users.org/lists/lua-l/2014-03/msg00489.html
-  Shared short string table : http://blog.codingnow.com/2015/08/lua_vm_share_string.html
+  Shared short string : https://blog.codingnow.com/2019/06/string_comparison.html