I think this change made in #105 might not allow the upload to occur when doing a release: https://github.com/GraphBLAS/python-suitesparse-graphblas/commit/84e41c2deab8f1e2cbe3a4aac53a7d84e92c9552#diff-75627befeafda60a526c116b32f6fdef9bf57bcf456f840d7592c1d6f13facb4R196 I will upload the 8.2.0.1 artifacts to PyPI manually (once the download finishes 🤣)