Domain-specific languages (dsls) can significantly increase productivity and quality in software construction. However, even dsl programs need to evolve to accomodate changing requirements and circumstances. How can we know if the design of a dsl supports the relevant evolution scenarios on its programs? We present an experimental approach to evaluate the evolutionary capabilities of a dsl and apply it on a dsl for digital forensics, called DERRIC. Our results indicate that the majority of required changes to DERRIC programs are easily expressed. However, some scenarios suggest that the dsl design can be improved to prevent future maintenance problems. Our experimental approach can be considered first steps towards evidence-based dsl evolution.