During August 8-9, 2019, U.S. Nuclear Regulatory Commission (USNRC) Radiation Sources Regulatory Partnership (RSRP) visited Paraguay to upgrade the Advanced Regulatory Information System (ARIS) to its latest version ARIS 3.5 at the Autoridad Reguladora Radiologica y Nuclear (ARRN). RSRP provided training for the upgrade that contains a newly developed module (OCCUDOSE) to manage occupational exposure information. Paraguay will play an important role in testing the new module and providing feedback to further improve the software.