PyPI
virtualenv
Virtual Python Environment builder
cythonhacktoberfestjythonlibrarypypapypypypy3python
Release cadenceEvery 2 days
Last releaseOct 30, 2026
Open advisories0
Changelog quality96% curated
GitHub Releases, gaps for some releases
Release history SecurityYou're on
211 older or filtered releases not shown.
Upgrade guides
Breaking changes and a migration checklist for each major versionvirtualenv 20 → 2120.39.1 → 21.15.2Oct 30, 2026 BreakingBreaking2Security35Platform2Deprecated2New11Changed25Fixed90Other21virtualenv 16 → 2016.7.12 → 20.39.1Feb 25, 2026 BreakingBreaking4Security4Platform2New37Changed112Fixed178Other24virtualenv 15 → 1615.2.0 → 16.7.12Jul 22, 2021 BreakingBreaking1Platform1Deprecated3New8Changed30Fixed32Other5virtualenv 14 → 1514.0.6 → 15.2.0Mar 22, 2018 BreakingBreaking2New1Changed11Fixed1Other6virtualenv 13 → 1413.1.2 → 14.0.6Feb 7, 2016 BreakingBreaking1New2Changed13Fixed13virtualenv 12 → 1312.1.1 → 13.1.2Aug 22, 2015 Review neededSecurity1Changed12Fixed1virtualenv 1 → 121.11.6 → 12.1.1Apr 7, 2015 Review neededChanged12Fixed6Other2virtualenv 0.9 → 10.9.2 → 1.11.6May 17, 2014 BreakingBreaking3Security1Platform1New2Changed15Fixed6Other3virtualenv 0.8 → 0.90.8.4 → 0.9.2Nov 10, 2007 Unknown
VersionChannelDateChangesSecurity
21.15.2 StableOct 30, 2026Fixed721.15.1 StableOct 28, 2026No changes listed21.15.0 StableOct 27, 2026No changes listed21.14.13 youStableOct 22, 2026Security2Fix21.14.12 StableOct 21, 2026Changed1Other121.14.11 StableOct 18, 2026Fixed221.14.10 StableOct 17, 2026Security1Fixed1Fix21.14.9 StableOct 17, 2026Breaking2Security14Changed4Fixed36Other1Fix21.14.8 StableOct 16, 2026Fixed121.14.7 StableOct 12, 2026Security2Fix21.14.6 StableOct 8, 2026Fixed121.14.5 StableOct 2, 2026Fixed121.14.4 StableOct 2, 2026Security1Fix21.14.3 StableOct 1, 2026Fixed121.14.2 StableOct 1, 2026Security1Fixed1Fix21.14.1 StableSep 29, 2026No changes listed21.14.0 StableSep 29, 2026New1Changed1Fixed1Other721.13.0 StableSep 26, 2026Security2Changed1Other321.12.1 StableSep 24, 2026Changed2Fixed121.12.0 StableSep 24, 2026New3Changed2