OpenSSL 4.0 for NGINX: Why We Ship 3.5 LTS Instead

by Danila Vershinin, August 30, 2026

OpenSSL 4.0 for NGINX drops out of support in May 2027. OpenSSL 3.5 LTS runs to April 2030 and already does post-quantum key exchange. Here is the arithmetic behind our choice, and the one 4.0 feature worth having.