We would like to draw your attention to the extension of the deadline to submit your manuscript to the Focus Section on Arctic and Antarctic Seismology, to be published in the July 2021 volume of Seismological Research Letters. The new deadline is December 28, 2020. Please visit this website for a detailed scope and do not hesitate to contact us if you have any questions. Kind regards and stay safe, Myrto Pirli & Peter Voss (Guest Editors)