This paper proposes a new method of document version management for workflow management systems (WfMSs). A WfMS is considered an essential element for automation of complex business processes involving many companies, particularly for those in an e-business environment. A core element of such business processes is the documents that flow through the processes. In fact, it can be thought that the execution of a business process is often tantamount to working out a set of formed documents. Therefore, it is very important to have a systematic management of document changes along with the process, execution. We propose a version model that can take into account the structure of the underlying process over existing version management techniques. In this model, the components of a document and a process are associated with each other, and this becomes the basis for automatic creation of document versions and automatic configuration of relevant documents for a certain user at a certain stage of the process. A prototype system is implemented, and the potential advantages of the approach are discussed.