A cryogenic tank-filling arrangement having a coupling device and a receptacle, wherein the coupling device and the receptacle are designed to be complementary to each other, wherein the cryogenic tank-filling arrangement can be brought with the aid of a pressure change in the intermediate space from an unlocked state—in which the coupling device and the receptacle are accommodated in each other at least in sections, so that the coupling device and the receptacle enclose an intermediate space which is closed off relative to an environment of the cryogenic tank-filling arrangement and which is arranged between an end face of the coupling device and an end face of the receptacle—into a locked state, in which the end face of the coupling device is pressed against the end face of the receptacle due to the pressure change.