The OECD Conference on Innovating Microbial Pesticide Testing took place in Paris, France on 13-16 September 2022, organized by the Expert Group on Biopesticides, a sub-body of the Organisation for Economic Co-operation and Development (OECD) Working Party on Pesticides. The goal of the conference was to agree upon, and begin to implement a workplan to improve current test guidelines for microbial pesticides, defined as “microorganisms (e.g., bacteria, fungi, viruses) that are used to control a wide range of agricultural pests, including plant disease-causing microorganisms, fungi, insects, and weeds”. More information about the conference, including relevant links, can be found in the latest OECD Biotechnology Update (December 2022). The 33-page newsletter, issued twice a year, provides an update on OECD activities related to biotechnology. See https://www.oecd.org/chemicalsafety/biotrack/biotech-update-issue-42-december-2022.pdf or contact [email protected] for more information.