The OECD Working Party on the Harmonisation of Regulatory Oversight in Biotechnology (WP-HROB) aims to assist countries in evaluating the potential risks of genetically engineered organisms, foster communication and mutual understanding of relevant regulations in countries and facilitate harmonisation in environmental risk/safety assessment of organisms produced through modern biotechnology. The 35th meeting of the WP-HROB took place online on 1-3 March 2021. The Organisation for Economic Co-operation and Development (OECD) recently published a 60-page information document entitled "Developments in delegations on biosafety issues, April 2020 – March 2021", compiling elements provided by delegations at the 35th WP-HROB meeting, aiming to summarise relevant information on activities related to biosafety issues since the previous meeting (March 2020) at the international level, by collating individual contributions from OECD Members, partner countries and observer organisations participating in the work. More information on the work of the WP-HROB can be found in the latest OECD Biotechnology Update (December 2021). The 33-page newsletter, issued twice a year, gives an overview of past and upcoming events, ongoing projects and publications and provides up-to-date information on the activities related to biotechnologies or the life sciences at the OECD. See https://www.oecd.org/chemicalsafety/biotrack/biotech-update-issue-40-december-2021.pdf or contact [email protected] for more information.