Certbot 0.40.1 has been released. The changelog entry for the release is: ## 0.40.1 - 2019-11-05 ### Changed * Added back support for Python 3.4 to Certbot components and certbot-auto due to a bug when requiring Python 2.7 or 3.5+ on RHEL 6 based systems. More details about these changes can be found on our GitHub repo.