Models need to be put under version control to facilitate collaboration and to control change. EMFStore is a Software Configuration Management system tailored to the specific requirements for versioning models. This demo will present how to commit changes, update changes and how to perform a merge on a model. Categories and Subject Descriptors D.2.7 [Software Engineering]: D.2.7 Distribution, Maintenance, and Enhancement—Version control; D.2.2 [Software Engineering]: D.2.2 Design Tools and Techniques—Computeraided software engineering (CASE); D.2.2 [Software Engineering]: D.2.9 Management—Software configuration management General Terms Management, Documentation, Design, Experimentation Keywords Model Merging, Operation-based, Software Configuration Management, Version Control System, Eclipse Modeling Framework