The Bank for International Settlements (BIS), alongside Swift and central banks from Italy, France, and Germany, is addressing the challenges that quantum computing poses for the financial system. Their initiative, Project Leap Phase 2, tested post-quantum cryptography in a real payment environment, specifically within the Eurosystem's Target2 system. By replacing traditional digital signatures with post-quantum cryptographic solutions, they aimed to assess the resilience of payment systems in a future where quantum computers could undermine existing security protocols. The tests showed that transitioning to post-quantum algorithms is feasible but highlighted significant performance differences compared to traditional methods. This disparity indicates a need for further evaluation and preparation before implementing these changes on a larger scale. The BIS emphasized that the challenges extend beyond technology; they include developing organizational awareness, allocating resources, and ensuring governance structures are in place. Effective collaboration among institutions is critical to safeguard the entire financial ecosystem against emerging threats from quantum computing.