According to CoinMeta, the XRP Ledger Foundation has proposed an anti-quantum upgrade plan in its 2027 roadmap. The plan aims to allow users to register anti-quantum signature keys based on the ML-DSA-44 algorithm for their existing accounts and disable the original keys in order to prevent future quantum computers from cracking traditional public key cryptography systems. The new scheme intends to maintain the current basic transaction fees unchanged, but anti-quantum signatures will increase the data volume per transaction by about 3.6 KB, and the storage overhead will expand to approximately 3.1 times that of regular payments.