  We have performed new fits of our chirally motivated coupled--channels model
for meson-baryon interactions and discussed the impact of the SIDDHARTA
measurement on the $\bar{K}N$ amplitudes in the free space and in nuclear
medium. The kaon--nucleon amplitudes generated by the model are fully
consistent with our earlier studies that used the older kaonic hydrogen data by
the DEAR collaboration. The subthreshold energy dependence of the in-medium
$\bar{K}N$ amplitudes plays a crucial role in $\bar{K}$--nuclear applications.
