The cyber security environment, its threats, and its defence strategies are constantly changing. Educational programmes and their curriculum are known to be slow changing and at times out-of-date, resulting in content that may not be as relevant to their students and the industry. This research paper will 1 -- present an overview of the curriculum development (CDev) process when using committees and their hindrance, 2 -- describe the concept of crowdsourcing and its benefits when using domain experts, 3 -- propose a Curriculum Development using Crowdsourcing Framework (CDC-F) to integrate expert crowdsourcing into parts of the CDev process (specifically the identification of industry-relevant topics and sub-topics for further curriculum content development), and 4 -- present the process and results of ang experiment utilising the CDC-F.