There is a consensus in the international community that geological repositories provide the necessary long-term safety and security to isolate long-lived radioactive waste. However, despite the technical merit and safety of repositories, challenges remain in many countries. These challenges include building and maintaining public confidence, the availability of skilled staff and the transfer of knowledge, as well as the involvement of younger professionals. As a synthesis of the Sixth International Conference on Geological Repositories (ICGR-6) hosted in Helsinki, Finland in April 2022, this report discusses the significant progress made in developing geological repositories over the past two decades and addresses the challenges that remain in many countries. It covers various aspects of the geological repository, including the younger generation's involvement, the status of national geological repository projects, research and development activities, building and maintaining human capacity, and ensuring stakeholder confidence. This publication provides valuable insights for decision-makers, regulators, implementers, scientists, young professionals and other stakeholders interested in the safe construction and operation of long-term geological repositories.