The world is accelerating into the future, but the Department of Defense's (DoD's) requirements system is stuck in the past. The current approach to generating requirements is too slow to produce results when they matter most, too inflexible to account for an unpredictable environment, and too narrowly focused to satisfy joint warfighting needs across all domain operations. This paper proposes a three-pronged approach to reforming the requirements process. First, the DoD should refine what it means by "requirements." Defining enduring, enterprise-level requirements within major mission areas allows for management at the portfolio level, improving alignment across systems and enabling more flexibility and innovation at lower levels. Next, the DoD should establish an Adaptive Requirements Framework that parallels the new Adaptive Acquisition Framework and provides new pathways for generating and validating requirements. Finally, the DoD should rethink how programs progress through each of the new pathways.