The International Organization for Standardization (ISO) has formally incorporated the Classic McEliece algorithm into its ISO/IEC 18033-2 standard for asymmetric ciphers, marking a significant milestone in the adoption of post-quantum cryptography1. This code-based cryptographic algorithm is specifically designed to safeguard communications and sensitive data from potential attacks by future quantum computers. Classic McEliece has already been successfully demonstrated in various applications, including quantum-safe communications, connected devices, and airborne drone systems. The standardization of this algorithm is expected to drive its broader adoption across industries. The inclusion of Classic McEliece in the ISO standard underscores the growing urgency for organizations to migrate to post-quantum cryptography, as the timeline for quantum computer developments continues to narrow. This standardization matters to practitioners because it highlights the need for proactive planning and implementation of quantum-resistant encryption solutions to ensure long-term data security.