VANCOUVER, British Columbia, April 18, 2023 — Endeavour Silver Corp. (“Endeavour” or the “Company”) (NYSE: EXK; TSX: EDR) is pleased to announce the Board of Directors (the “Board”) of the Company has made the decision to proceed with the construction of an underground mine and mill at the Terronera Project in Jalisco state, Mexico. To date, the Company made significant progress on development activities, with long-lead item procurement well advanced and a seasoned team of development personnel established on the ground. Additional activities include onsite delivery of mobile mining equipment, assembly of initial project infrastructure and advanced earthworks with commencement of underground mine access development. All references to dollars ($) in this news release are in United States dollars.