Aspirants can stay updated with constitutional amendments relevant to the UPSC exam by following reliable news sources, official government websites, and legal journals. Regularly checking updates on legislative changes and important judgments through platforms like the Parliament website or the Ministry of Law can enhance legal knowledge. Joining discussion forums and study groups can also facilitate collective learning and engage with peers on significant amendments. Furthermore, creating a timeline of critical amendments can aid in better understanding their implications on governance and policies, ensuring candidates are well-prepared for related questions.