Software configuration management (SCM) has been defined as the discipline of controlling the evolution of complex software systems. As a vital task of professional software development, it also has to be performed in software projects developed using Lyee methodology. In this article, we present a SCM concept for Lyee. We first give a short introduction into SCM. Then, we define the structure of Lyee programs using mathemat- ical definitions in order to provide a sound basis for further discussions. These definitions allow mapping the entities of Lyee programs onto configuration items introduced before. Finally, we depict the architecture of a system using an existing SCM tested.