You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
umap was reported malicious
OSV:MAL-2025-192992 - Malicious code in umap (PyPI)

umap

This package was deleted from PyPI around 2025-11-23. Installing fails with:
$ pip3 install umap ERROR: Could not find a version that satisfies the requirement umap (from versions: none) ERROR: No matching distribution found for umap

Install through StableBuild

You can install this package from StableBuild's PyPI snapshots from before the version was deleted:
pip3 install \ -i https://YOUR_API_KEY.pypimirror.stablebuild.com/2025-11-22/ \ umap
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Or, download files manually

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0.1
0.1.1