Most climate change vulnerability assessments focus on the vulnerability of the physical environment to a changing climate. Yet the processes we use to make decisions can be just as vulnerable to climate change. This type of vulnerability arises when the assumptions that underpin our decision processes are likely to be violated as the climate changes, resulting in decisions that will ultimately fail to achieve our objectives. For example, one critical assumption is that the natural world is static - that species and ecosystems will continue to exist where we currently find them.  We developed a tool to help policy-makers and program leaders responsible for nature conservation to recognise where their decision-making processes (or workflows) are not climate-ready because they rely on inappropriate assumptions. The tool has also been designed to reveal ways to adapt decision-making processes to make them more climate-ready. We discuss the advantages and pitfalls of trying to apply our ‘Climate-ready Lens’ to two case studies in New South Wales, Australia. Ultimately, we argue that assessing vulnerability of decision-making processes themselves, and adapting them, can be a positive if not essential complement to adapting the implementation of on-ground activities, yet has been under-utilised in practice.