Let's Encrypt, a widely used provider of free SSL/TLS certificates that secure internet traffic, is moving to shorten the duration of its certificates. As of February 2027, the organization will implement a new maximum lifetime of 64 days for all issued certificates. This change is part of a broader industry trend toward shorter certificate lifespans, which are intended to improve security by limiting the window of opportunity for attackers to use compromised or stolen certificates.

While the announcement provides a clear timeline for the transition, it implies significant changes for website administrators who rely on automated renewal processes. Because the new 64-day window is shorter than the current standard, organizations that do not have robust automation in place will need to update their infrastructure to handle more frequent renewals. The move is expected to push the industry further toward full automation of certificate management, reducing the risk of human error or oversight that can lead to expired certificates and website downtime.