In July 2021, the Addiction and Public Policy Initiative published “National Snapshot: Access to Medications for Opioid Use Disorder in U.S. Jails and Prisons.” The report provided an overview of litigation, state legislation, and policies that had been adopted to increase access to medications for opioid use disorder (MOUD) in U.S. jails and prisons. This new document supplements the “snapshot” and highlights progress that has been made in 22 states since the last publication.