How can i upgrade to Certbot 0.27 to latest

Hello.,
Thank you for the reply .

i use "apt-get install" and it worked for me. now the package is updated to 0.28.0.
and now,
I've to follow these steps to stop using TLS-SLI-01

since it is in a production environment, need to get approval from the client.
once again thank you so much for your help.