High resolution spectroscopy heavily relies on the plasma modeling, which is not only a plasma code, but also a substantial database of physics cross sections and wavelengths. Hitomi observations have spurred a revolution in plasma code models, revealing a number of places where current models such as AtomDB and SPEX needed to update. I will summarize how there issues were identified and treated, and introduce the recent development on a few key spectral components, such as the Fe-L complex, charge exchange, and the non-Maxwellian emission. I will speculate on further updates, including a new treatment of systematic uncertainties due to plasma modeling, that will be needed as new high-resolution spectral data are obtained.