The third training session of the BRINC Network of public authorities took place on 29 November 2023. The focus of this training was on how to change organisation mindset in order to support the implementation of circular economy. Participants learned about the experiences of the the city of Malmo and the region of Sardegna, which both succeeded in reaching interdepartmental collaboration on Green Public Procurement, designing, and implementing strategies for green and sustainable purchasing. Evidence from the GREENER project also showed that involvement and participation of SMEs in GPP could be further increased through different tools, such as trainings and the use of LCA in the evaluation phase.