April 2026 monthly summary for letsencrypt/boulder: Focused on stabilizing and securing deployment infrastructure by upgrading the Consul deployment in Docker Compose to the latest supported version. This upgrade enhances stability, security, and reliability, and is tracked with a dedicated commit to ensure traceability for future maintenance.

March 2026 monthly summary for letsencrypt/boulder: Implemented HTTP/2 TLS ALPN advertising to support Consul health checks, addressing ALPN enforcement changes in upgraded grpc-go. The change explicitly advertises the h2 protocol in the TLS ALPN field when configuring raw tls.Config, ensuring Consul health checks succeed without impacting existing TLS clients. This improves reliability during infrastructure upgrades and reduces deployment risk in service mesh scenarios.

February 2025 focused on content accuracy improvements for letsencrypt/website. Delivered a targeted bug fix in the blog content by correcting the Certificate Transparency reference, updating the link from censys.io to crt.sh to direct readers to the correct CT log. The change was implemented in commit a174adfba044e6279ef265fd7525ac731d3864a1 ("Replace censys link with crt.sh in short lived cert blog post (#1850)").