Hello Étienne, PyZstd will be auto-removal from testing because some serious bugs in python-pyzstd/0.16.0+ds-1. Please upload python-pyzstd/0.16.0+ds-3 to fix the issue. https://salsa.debian.org/python-team/packages/python-pyzstd If something wrong on my fix, please add your fixups. Thanks, -- YOKOTA Hiroshi