How can i upgrade to Certbot 0.27 to latest

Hi,
Currently the Certbot version in 0.27.1. S i got a "Action required mail" from lets encrypt, so i tried to update it.
So i was following this link

it says that, the certbot version would be 0.28 or higher.
I'm using CentOS 7. Could you please guide me how to update this.
Thanks in advance.