  With the advance of stellar atmosphere modelling during the last few years,
large progress in the understanding of Wolf-Rayet (WR) mass loss has been
achieved. In the present paper we review the most recent developments,
including our own results from hydrodynamic non-LTE model atmospheres. In
particular, we address the important question of the Z-dependence of WR mass
loss. We demonstrate that models for radiatively driven winds imply a rather
strong dependence on Z. Moreover, we point out the key role of the L/M-ratio
for WR-type mass loss.
