This thesis examines the roles played by digital information and communication technologies in a Swedish public library’s three-year long renovation project. As a case study of technology-influenced collaboration in a cultural heritage institution, this study addresses a gap in digital humanities research on the practical details of sociotechnical collaboration, as well as a lack of documentation of an ongoing trend of renovations and rebuildings of Swedish public libraries.  A large number of internal materials produced at the library during the course of its renovations was studied, and semi-structured qualitative interviews with three of the cultural heritage workers involved were conducted. Reading these materials with an actor-network theory approach, an account was constructed of the renovation project and the usages therein of digital technologies, in order to examine these technologies as actors and their effects on the project. It was found that, throughout the project, information and communication technologies were used to think, plan, organize, discuss, and make decisions about the work, that limitations and affordances of these technologies shaped how they could be used, and that this thus had effects on the project. Digital technologies are shown to have been active and agential, and avenues for future research are suggested.