Open Science is gaining more and more ground among academics. This has consequences for research libraries and their staff tasked with services supporting the entire research life cycle, from providing access to relevant databases, to research data management, to scholarly publishing. To stay relevant, research library services have to be developed and adapted to support Open Science research activities. Therefore, it is important to investigate what competencies and skills are needed to provide a given library service, both in terms of continuing education and training of existing library staff and of curriculum development in library and information science education.