Sergius Bulgakov (1871–1944) was one of the centrally important Russian Orthodox theologians of the past century. His theological system (Sophiology) is among the most detailed and comprehensive attempts at a novel, Orthodox systematic theology developed in engagement with western philosophical and theological movements. His first major work of theology, Unfading Light (1917), incorporates an early Orthodox critique of the radical Christian transhumanism propounded by Nikolai Fedorovich Fedorov (1829–1903). Fedorov had developed an account of humanity's prospects for a technologically facilitated eschatology. (...) The goals of this article are: (1) to provide a concise summary Fedorov's ideas on technologized resurrection; (2) to provide an overview of Bulgakov's sympathetic critique of Fedorov's model; and (3) to discuss the ongoing relevance of that critique vis‐à‐vis current and future Christian dialogue with the transhumanist movement. (shrink)