＞OpenSSL 1.1.1 was released on 11th September 2018, and so it will be considered EOL on 11th September 2023. It will no longer be receiving publicly available security fixes after that date.

＞Our most recent version is OpenSSL 3.1 which will be supported until 14th March 2025. Also available is OpenSSL 3.0 which is an LTS release and will be supported until 7th September 2026.

というわけで 3.0 系へ移行しませう

＞OpenSSL 1.1.1 End of Life - OpenSSL Blog
https://www.openssl.org/blog/blog/2023/03/28/1.1.1-EOL/