Recently, the interest in the phenomenon of backsourcing has increased, which has been inspired by awareness of the real costs of global outsourcing and the importance of keeping manufacturing in-house or in geographical proximity. However, backsourcing research is still in its infancy. In particular, this strategy requires a successful knowledge re-integration process when organizations employ backsourcing as their new sourcing strategy, which is addressed in this paper. To expand the understanding of backsourcing, a literature review of this phenomenon is given, and based on findings from a case company in the Norwegian shipbuilding industry, we present critical success factors for knowledge re-integration when bringing manufacturing back in-house.