This paper studies the design of green disclosure requirements. We show that dynamic green disclosure requirements that become more stringent over time can dominate full transparency. Less stringent initial requirements can overcome roadblocks in the early stages of the green transition, while more stringent requirements facilitate later stages. Such dynamic green disclosure requirements may slow down reform for some firms, but can increase the number of firms that eventually reform, highlighting a trade-off between the pace and breadth of the green transition. Our results apply to recent policies mandating green disclosures, many of which become more stringent over time