Hard X-ray luminosities of X-ray-detected high-redshift quasars. All eROSITA-detected quasars are marked by a red square. The normalised area of eFEDS that is sensitive to sources modelled by a fiducial absorbed power law (Γ = 3!!!! and N_H = 3 × 10²⁰ cm⁻²) is represented by the background colour map. J0921+0007, shown here as a pink square, lies at the detection limit of the eFEDS survey, as expected from the low eROSITA detection likelihood.