* OpenSSL 1.1.1 is the minimum possible version to build the :mod:`ssl` and

:mod:`hashlib` extension modules against, but the series is end-of-life and

no longer receives public security fixes. Use the latest patch release of a

currently supported LTS release series (see the `OpenSSL Roadmap

<https://openssl-library.org/roadmap/index.html>`__), or the package

provided by your operating system if available. Other libraries that offer

an API compatible with OpenSSL 1.1.1 or later may work, but are not

officially supported.