PyPI
nltk
Natural Language Toolkit
machine-learningnatural-language-processingnlpnltkpython
github.com/nltk/nltkwww.nltk.org/Apache-2.0NLTK Team10.2M / week14.8k · 3.1k forks · 528 contributors
Release cadenceEvery 4 weeks
Last releaseOct 21, 2026
Open advisories4
Changelog quality9% curated
GitHub Releases, gaps for some releases
Release history SecurityYou're on
50 older or filtered releases not shown.
Upgrade guides
Breaking changes and a migration checklist for each major versionVersionChannelDateChangesSecurity
3.10.4 StableOct 21, 2026Security126New4Changed3Fixed52Other37Fix3.10.3 StableAug 12, 2026Security26Other1Fix3.10.2 StableAug 5, 2026Breaking1Security4Other2Fix3.10.1 StableAug 1, 2026Security1Fix3.10.0 StableJul 8, 2026Security86New1Changed6Fixed22Other10Fix3.9.4 youStableMar 24, 2026Security6Fix3.9.3 StableFeb 24, 2026Security4Fix3.9.2 StableOct 1, 2025No notes published3.9.1 StableAug 18, 2024No notes published3.9 StableAug 18, 2024Security1Fix3.9b1 BetaAug 16, 2024No notes published3.8.1 StableJan 2, 2023No notes published3.8 StableDec 12, 2022No notes published3.7 StableFeb 9, 2022No notes published3.6.7 StableDec 28, 2021No notes published3.6.6 StableDec 21, 2021Security1Fix3.6.5 StableOct 11, 2021Security1Fix3.6.4 YankedOct 1, 2021Security1Fix3.6.3 StableSep 20, 2021No notes published3.6.2 StableApr 20, 2021No notes published