Aptos has introduced AIP-137, a proposal to enhance its network security by implementing a post-quantum signature scheme. The proposed upgrade utilizes SLH-DSA-SHA2-128s and is designed to work alongside the existing Ed25519 signature scheme. This optional enhancement aims to address potential future risks posed by quantum computing. The network plans to implement this change through governance, allowing stakeholders to vote on the proposal. With a market capitalization exceeding $12 billion, Aptos is positioning itself to maintain robust security measures and protect against emerging threats. This move is seen as a strategic long-term investment in the network's resilience.