The UPSC syllabus is updated periodically as needed to reflect changing national priorities and global dynamics, generally every 2-3 years. This is important to ensure that candidates are equipped with relevant knowledge and skills that align with contemporary issues and challenges in governance. By staying informed on recent changes, candidates can adapt their preparation strategies to cover new topics and trends. Regular updates allow the curriculum to remain aligned with the evolving demands of civil services and the socio-economic landscape.