Certbot 2.0.0 Release

We're excited to announce that we've just released v2.0.0 of Certbot! The changelog is as follows:

2.0.0 - 2022-11-21


  • Support for Python 3.11 was added to Certbot and all of its components.
  • acme.challenges.HTTP01Response.simple_verify now accepts a timeout argument which defaults to 30 that causes the verification request to timeout after that many seconds.


  • The default key type for new certificates is now ECDSA secp256r1 (P-256). It was previously RSA 2048-bit. Existing certificates are not affected.
  • The Apache plugin no longer supports Apache 2.2.
  • acme and Certbot no longer support versions of ACME from before the RFC 8555 standard.
  • acme and Certbot no longer support the old urn:acme:error: ACME error prefix.
  • Removed the deprecated certbot-dns-cloudxns plugin.
  • Certbot will now error if a certificate has --reuse-key set and a conflicting --key-type, --key-size or --elliptic-curve is requested on the CLI. Use --new-key to change the key while preserving --reuse-key.
  • 3rd party plugins no longer support the dist_name:plugin_name format on the CLI and in configuration files. Use the shorter plugin_name format.
  • acme.client.Client, acme.client.ClientBase, acme.client.BackwardsCompatibleClientV2, acme.mixins, acme.client.DER_CONTENT_TYPE, acme.fields.Resource, acme.fields.resource, acme.magic_typing, acme.messages.OLD_ERROR_PREFIX, acme.messages.Directory.register, acme.messages.Authorization.resolved_combinations, acme.messages.Authorization.combinations have been removed.
  • acme.messages.Directory now only supports lookups by the exact resource name string in the ACME directory (e.g. directory['newOrder']).
  • Removed the deprecated source_address argument for acme.client.ClientNetwork.
  • The zope based interfaces in certbot.interfaces have been removed in favor of the abc based interfaces found in the same module.
  • Certbot no longer depends on zope.
  • Removed deprecated function certbot.util.get_strict_version.
  • Removed deprecated functions certbot.crypto_util.init_save_csr, certbot.crypto_util.init_save_key,
    and certbot.compat.misc.execute_command
  • The attributes FileDisplay, NoninteractiveDisplay, SIDE_FRAME, input_with_timeout, separate_list_input, summarize_domain_list, HELP, and ESC from certbot.display.util have been removed.
  • Removed deprecated functions certbot.tests.util.patch_get_utility*. Plugins should now
    patch certbot.display.util themselves in their tests or use
    certbot.tests.util.patch_display_util as a temporary workaround.
  • Certbot's test API under certbot.tests now uses unittest.mock instead of the 3rd party mock library.


  • Fixes a bug where the certbot working directory has unusably restrictive permissions on systems with stricter default umasks.
  • Requests to subscribe to the EFF mailing list now time out after 60 seconds.

We plan to slowly roll out Certbot 2.0 to all of our snap users in the coming months. If you want to use the Certbot 2.0 snap now, please follow the instructions at Certbot 2.0 beta - call for testing.

More details about these changes can be found on our GitHub repo.




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