Nowadays the practical interest of scientific research result and educational lectures and materials push to the creation and development of open archives of scientific publications. The JINR Document Server (JDS — jds.jinr.ru) was based on the software platform Invenio (developed at CERN). The goals of JDS are to store JINR information resources and to provide effective access to them. JDS contains many materials that reflect and facilitate research activities. In the framework of the JOIN2 project, the partners have improved and adapted the Invenio software platform to the information needs of JOIN2 users. Needs of JDS users are very similar to needs of JOIN2 users, so JINR decided to join JOIN2 project. The participation of JINR in the project will improve the functionality of the JINR Open Access institutional repository by reusing the code and further joint development. The presentation shows the process of migration and adaptation JDS to JOIN2 software platform.