diff --git a/README.md b/README.md
index 66d4a4c2..a993bdf3 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,8 @@ Use `python 3` to add member from Group A to Group B (migrate member of your gro
 * Notice you region phone
 * Your group is Supper group
 
+https://www.wikihow.com/Convert-a-Telegram-Group-to-a-Supergroup-on-PC-or-Mac
+
 ![Supper group](images/note_tele.png)
 ![Upgraded Supper group](images/note_tele2.png)
 
@@ -73,4 +75,4 @@ Note: If your account blocked, get link https://web.telegram.org/#/im?p=@SpamBot
 Done!
 
 ## Ps: 
-Because some people interesting my repository create some issue, inbox Telegram. I don't have time to solve it, so I update your script to be good. I will open issue and try to resolved it. But some thing about basic language `python`, please search Internet before create issue! Thanks!
\ No newline at end of file
+Because some people interesting my repository create some issue, inbox Telegram. I don't have time to solve it, so I update your script to be good. I will open issue and try to resolved it. But some thing about basic language `python`, please search Internet before create issue! Thanks!