# CERTBOT and ACMEV2 upgrade **URL:** \ **Category:** Help\ **Created:** [February 5, 2020, 2:21pm UTC](https://community.letsencrypt.org/t/certbot-and-acmev2-upgrade/112406 "2020-02-05T14:21:05Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![glariture](https://avatars.discourse-cdn.com/v4/letter/g/7ba0ec/32.png) [@glariture](https://community.letsencrypt.org/u/glariture)\ **Post date:** [February 5, 2020, 2:21pm UTC](https://community.letsencrypt.org/t/certbot-and-acmev2-upgrade/112406/1 "2020-02-05T14:21:05Z")
Hello, here I received an email regarding my free certificate let’s encrypt 3 months. informing me that ACMEV1 will no longer be usable from June 1, we must switch to ACMEV2 only here it is not me who to install this server, I have solid computer bases but I do not know this system at all apart from stupidly renewing my certificate for the moment that is all. CertbotACMEClient / 0.9.3 (Debian GNU / Linux 8 (jessie)) Authenticator / webroot Installer / None Hostname (s): “[mail.TOTO.com](http://mail.TOTO.com)”, “[smtp.TOT.com](http://smtp.TOT.com)”, “[webmail.TOTO.com](http://webmail.TOTO.com)” do you have a procedure to follow? Thank you very much ---
**Author:** ![JuergenAuer](https://sea3.discourse-cdn.com/letsencrypt/user_avatar/community.letsencrypt.org/juergenauer/32/26491_2.png) [@JuergenAuer](https://community.letsencrypt.org/u/JuergenAuer)\ **Post date:** [February 5, 2020, 3:03pm UTC](https://community.letsencrypt.org/t/certbot-and-acmev2-upgrade/112406/2 "2020-02-05T15:03:23Z")
Hi @glariture I don’t know the client you use. Check, if there is a config file with `acme-v01.api.letsencrypt.org`. Or a log with that address. Then check the documentation of that tool how to update to `acme-v02.api.letsencrypt.org`. Or check, if there is a newer version required. ---
**Author:** ![glariture](https://avatars.discourse-cdn.com/v4/letter/g/7ba0ec/32.png) [@glariture](https://community.letsencrypt.org/u/glariture)\ **Post date:** [February 5, 2020, 5:43pm UTC](https://community.letsencrypt.org/t/certbot-and-acmev2-upgrade/112406/3 "2020-02-05T17:43:54Z")
So I have to type this command on my linux command line if I understand correctly? ---
**Author:** ![JuergenAuer](https://sea3.discourse-cdn.com/letsencrypt/user_avatar/community.letsencrypt.org/juergenauer/32/26491_2.png) [@JuergenAuer](https://community.letsencrypt.org/u/JuergenAuer)\ **Post date:** [February 5, 2020, 7:05pm UTC](https://community.letsencrypt.org/t/certbot-and-acmev2-upgrade/112406/4 "2020-02-05T19:05:21Z")
Please start with some basics: > **[How It Works - Let's Encrypt - Free SSL/TLS Certificates](https://letsencrypt.org/how-it-works/)** > > Last updated: Oct 18, 2019 The objective of Let’s Encrypt and the ACME protocol is to make it possible to set up an HTTPS server and have it automatically obtain a browser-trusted certificate, without any human intervention. This is... Then check your client documentation. Or switch to another client. > **[ACME Client Implementations - Let's Encrypt - Free SSL/TLS Certificates](https://letsencrypt.org/docs/client-options/)** > > Last updated: Feb 2, 2020 | See all Documentation Let’s Encrypt uses the ACME protocol to verify that you control a given domain name and to issue you a certificate. To get a Let’s Encrypt certificate, you’ll need to choose a piece... ---
**Author:** ![mnordhoff](https://sea3.discourse-cdn.com/letsencrypt/user_avatar/community.letsencrypt.org/mnordhoff/32/22583_2.png) [@mnordhoff](https://community.letsencrypt.org/u/mnordhoff)\ **Post date:** [February 5, 2020, 7:55pm UTC](https://community.letsencrypt.org/t/certbot-and-acmev2-upgrade/112406/5 "2020-02-05T19:55:36Z")
To upgrade Certbot on Debian Jessie, you can follow the installation instructions to remove the apt package and switch to certbot-auto: > **[Certbot - Debianjessie Other](https://certbot.eff.org/lets-encrypt/debianjessie-other)** > > Automatically enable HTTPS on your website with EFF's Certbot, deploying Let's Encrypt certificates. ---
**Author:** ![system](https://global.discourse-cdn.com/letsencrypt/original/3X/c/a/ca6c06ea1ea201324bba7048c6841ce60236468d.png) [@system](https://community.letsencrypt.org/u/system)\ **Post date:** [March 6, 2020, 7:55pm UTC](https://community.letsencrypt.org/t/certbot-and-acmev2-upgrade/112406/6 "2020-03-06T19:55:39Z")
Closed on March 6, 2020, 7:55pm UTC This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.