You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
jinja22 was reported malicious
OSV:MAL-2025-41693 - Malicious code in jinja22 (PyPI)

jinja22
3.1.0

This version was deleted from PyPI around 2024-11-23. Installing fails with:
$ pip3 install jinja22==3.1.0 ERROR: Could not find a version that satisfies the requirement jinja22==3.1.0
View other deleted versions of jinja22

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/2024-11-22/ \ jinja22==3.1.0
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Or, download files manually

And install manually via pip:
jinja22-3.1.0-py3-none-any.whl (1.7KB)
jinja22-3.1.0.tar.gz (1.8KB)