@jivanpal We do not currently have any plans to support elliptic curve keys - this is a very sensitive topic given different governmental security requirements around the world. Note that Let's Encrypt recommends a dual setup for this exact reason: "Our recommendation is to serve a dual-cert config, offering an RSA certificate by default, and a (much smaller) ECDSA certificate to those clients that indicate support." (https://letsencrypt.org/docs/integration-guide/)