The aim of the article is to define and substantiate a vision of a comprehensive renewal of the system of social dialogue in Ukraine as an important prerequisite for its acquisition of a qualitatively new level of efficiency, which corresponds to the scale and complexity of the challenges facing Ukraine in the current conditions. The vision includes the content of the general conception of renewal (the essential logic of the process), the definition of the spectrum of the novel challenges and threats to the labor sphere, the system of social and labor relations (SLR) and social dialogue (these are four groups of factors: digitalization, the accelerated European integration, the devastating consequences of large-scale armed russian aggression and chronically unresolved problems accumulated in the pre-war period in the SLR system, and in the field of labor); the content and logic of the process of network-digital renewal of the system of social dialogue, its structural segments; the practical component is to identify the key actors involved in updating the system of social dialogue, the main areas of activity, measures for their implementation, the formation of a new technological basis for the updated system of social dialogue, which allows to ensure effective communication of the subjects of the SLR, to expand the composition of the parties to the social dialogue, to create conditions for a gradual transition to the model of «tripartism+». The authors of the article, on the basis of a generalization of the results of the research by previous authors and other studies, substantiate the need for a significant update of the system of social dialogue in Ukraine as an important instrument for consolidation of subjects of the social and labor sphere for the adoption and implementation of effective mutually agreed decisions to ensure the sustainability of the labor sphere and the national economy, to meet the needs of Ukraine’s recovery. The main idea of updating the system of social dialogue in Ukraine in the context of the needs to ensure the sustainability of the labor sphere is to create a qualitatively new environment for the productive interaction of the parties to the social dialogue through the use of modern network-digital and information-communication technologies. The expediency of such involvement is substantiated, the content of three key segments for the implementation of the platformization of the national system of social dialogue is disclosed. A list of the main participants in this process has been determined, the content of the main activities and measures for their implementation has been covered for each segment. Further research on updating the system of social dialogue in Ukraine should be aimed at forming a strategic basis, taking into account the further course of hostilities, European integration, digitalization of the economy and other processes that are decisive for Ukraine.