Theme of this final paper is transition to digitalized management of the machinery maintenance of the company Oprema-Intercom d.o.o. through the information system. The first part of the paper is about the theoretical foundations of technical system maintenance, the goal of technical systems maintenance, the life cycle of the machinery, organization and methods of technical systems maintenance and the theoretical basis of information systems. This is followed by an introduction of the company in which digitalization was realized. The production range of the company, production process is described, and the machine park of the company is presented in more detail together with the maintenance plan of individual machines. In the last part of the final paper, the digitalization of the maintenance of the machine park is discussed. The goals and the possibilities of digitalization of the maintenance of the machine park are stated. The company's information system was explained, and the implementation of the maintenance module in the information system was elaborated. The possibilities provided by the information system are also presented, and the connection between the information within the information system is explained. The main idea of the final paper is the digitalization of machine fleet maintenance, consolidation and digitization of documents, and partial automation of fleet maintenance management to improve and simplify the management of machine fleet maintenance.