In the light of Industry 4.0, there exists a drive in engineering to include cybersecurity in the design, development and maintenance of smart cyber-physical systems. The high interconnectivity of these systems make these systems more susceptible to cyberattacks. In South Africa, the engineering education space does not traditionally cater for cybersecurity training in undergraduate or post-graduate studies. The lack of cybersecurity education in engineering and the need for cybersecurity knowledge in the industry highlights a knowledge gap in the field of cybersecurity engineering. This paper describes the process followed to determine the body of knowledge which should be considered for a postgraduate module in cybersecurity in engineering in South Africa. Findings show that topics related to Software Security, Systems Security and Organizational Security are deemed most important for inclusion in the cybersecurity body of knowledge for a postgraduate module in Systems Engineering.