An Enterprise Architecture (EA) is used for the design and realization of the business processes, along with user roles, applications, data, and technical infrastructures. Over time, maintaining an EA update may become a complex issue, let alone an organization-wide architecture and its related artifacts. EA practices provide much of the required guidelines for the design and development of EAs. However, they cannot present a comprehensive method or solution for the re-engineering processes of EAs. In this paper, we propose an EA re-engineering model and present its potential contributions. The study is conducted according to the Design Science Research Method. The research contribution is classified as an “application of a new solution (process model) to a known problem (re-engineering EA)”. The future research efforts will focus on the implementation and evaluation of the model in case studies for gathering empirical evidences.