Ripple is preparing the XRP Ledger for quantum computing threats through a four-stage roadmap targeting full post-quantum readiness by 2028 with an emergency migration path for accelerated advances. The effort focuses on long-term infrastructure rather than immediate crisis response as the network has surpassed 5 billion transactions and real-world asset activity has accelerated. The plan includes mapping vulnerabilities, testing NIST algorithms, running parallel cryptography from the second half of 2026, and final native post-quantum signatures by 2028, with key changes possible without altering accounts. A recent AI-assisted attack on experimental post-quantum scheme HAWK by Anthropic researchers highlights accelerating cryptanalysis risks. No evidence suggests current quantum computers can break XRP Ledger keys, and holders need no immediate action.