Logistics 4.0 is a recent paradigm derived from the Industry 4.0 paradigm applied to the logistics sector. Several new technologies have been developed to improve logistics performance. The present research aims to build a maturity model to support 3PL providers in assessing their level of maturity and identifying the areas in which to invest to improve the logistics service offered through the implementation of Logistics 4.0 technologies. The maturity model was developed using a structured framework of four main steps: the definition of the model scope; the model design (literature review on Logistics 4.0 and the existing maturity models); the model composition and validation; and pilot tests in three relevant 3PL providers. The proposed maturity model has four constructs (i.e. strategic outcomes, requirements, Logistics 4.0 technologies, managerial and capability supporters) and four maturity levels (i.e. initial, intermediate, advanced, cutting-edge).