You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
async-substrate-interface-upgrade was reported malicious
OSV:MAL-2026-51 - Malicious code in async-substrate-interface-upgrade (PyPI)

async-substrate-interface-upgrade
1.5.17

This version was deleted from PyPI around 2026-01-06. Installing fails with:
$ pip3 install async-substrate-interface-upgrade==1.5.17 ERROR: Could not find a version that satisfies the requirement async-substrate-interface-upgrade==1.5.17
View other deleted versions of async-substrate-interface-upgrade

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/2026-01-05/ \ async-substrate-interface-upgrade==1.5.17
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Or, download files manually

And install manually via pip:
async_substrate_interface_upgrade-1.5.17-py3-none-any.whl (87.6KB)
async_substrate_interface_upgrade-1.5.17.tar.gz (84.3KB)