Wiki-librarian is a multiyear project to train librarians and students of librarianship and information science to use wiki tools, including writing articles on Wikipedia. The project has existed since the beginning of 2015, and the University Library "Svetozar Marković" and is logistically and financially supported by Wikimedia Serbia. The part of the project that deals with the training of librarians is officially accredited. Moreover, the project has expanded its scope to work with students, as well as with librarians outside the training process, through editathons, digitization of content, participation in other wiki activities such as 1Lib1Ref, Wikipedian in Residence. Project activities were presented at several conferences and partially in several publications. On the one hand, better awareness of librarians of wiki software IT capabilities as well as methods for improved presentation of their knowledge in the digital wiki environment are achieved by this project, while on the other hand these activities significantly increase the textual resources of Serbian Wikipedia and their quality.