Preliminary Efficacy Trial of a Digital Intervention for Depression and Cannabis Use

Inclusion Criteria: * Aged ≥ 18 years * Resides in the United States * Able to read and understand English and willing to provide informed consent/comply with the study protocol * Moderate depressive symptom severity, as indicated by the Patient Health Questionnaire-9 (PHQ-9) * Problematic cannabis use, as indicated by the Cannabis Use Disorder Identification Test - Revised (CUDIT-R) * Current elevated anhedonia, as indicated by the PHQ-9 * Interest in receiving treatment for their cannabis use and depression * Meet criteria for current MDD and CUD per the DSM-5 Exclusion Criteria: * History of a psychotic disorder or bipolar disorder type I/II * Active suicidal ideation or intent based on the Columbia-Suicide Severity Rating Scale * Current psychotherapy engagement * Changes in psychotropic medication within six weeks of the start of study