AtRIS stands for the Atmospheric Radiation Interaction Simulator. AtRIS models the interactions of cosmic particles with planetary atmosphere and soil. It was originally released at https://gitlab.physik.uni-kiel.de/ET/atris. This current version is an update on 2019-06-12. A detailed documentation can be found on https://et-wiki.physik.uni-kiel.de/atris/atris. AtRIS has been validated in previous publications. For instance: The detailed description and validation can be found in Banjac et al, https://doi.org/10.1029/2018JA026042 For the calculation of absorbed dose in different phantoms, AtRIS offers the possibility to use precalculated phantom response matrices (converting particle spectra to dose) as described in (Banjac et al., 2019; https://doi.org/10.1051/swsc/2019014). AtRIS was applied to the Martian environment with the calculated surface particle spectra validated against the MSL/RAD measurements (Guo et al., 2019; https://doi.org/10.1051/swsc/2018051). It was applied to calculate the Venusian ionization environment (Herbst 2019 et al; 10.1051/0004-6361/201935152)