NuGetJetBrains.
JetBrains.Annotations
JetBrains.Annotations help reduce false positive warnings, explicitly declare purity and nullability in your code, deal with implicit usages of members, support special semantics of APIs in ASP.NET and XAML frameworks and otherwise increase accuracy of JetBrains Rider and ReSharper code inspections.
jetbrainsresharperriderannotationscanbenullnotnull
github.com/JetBrains/JetBrains.Annotationswww.jetbrains.com/help/resharper/Code_Analysis__Code_Annotations.htmlMITJetBrains55 · 21 forks · 17 contributors
Release cadenceEvery 6 months
Last releaseJun 16, 2026
Open advisories0
Changelog quality0% curated
No release notes found
Release history SecurityYou're on
42 older or filtered releases not shown.
Upgrade guides
Breaking changes and a migration checklist for each major versionJetBrains.Annotations 2025 → 20262025.2.4 → 2026.2.0Jun 16, 2026 UnknownJetBrains.Annotations 2024 → 20252024.3.0 → 2025.2.4Nov 26, 2025 UnknownJetBrains.Annotations 2023 → 20242023.3.0 → 2024.3.0Oct 24, 2024 UnknownJetBrains.Annotations 2022 → 20232022.3.1 → 2023.3.0Nov 7, 2023 UnknownJetBrains.Annotations 2021 → 20222021.3.0 → 2022.3.1Nov 7, 2022 UnknownJetBrains.Annotations 2020 → 20212020.3.0 → 2021.3.0Oct 28, 2021 UnknownJetBrains.Annotations 2019 → 20202019.1.3 → 2020.3.0Nov 27, 2020 UnknownJetBrains.Annotations 2018 → 20192018.3.0 → 2019.1.3Jul 3, 2019 UnknownJetBrains.Annotations 11 → 201811.1.0 → 2018.3.0Jan 14, 2019 UnknownJetBrains.Annotations 10 → 1110.4.0 → 11.1.0Oct 24, 2017 UnknownJetBrains.Annotations 9 → 109.2.0 → 10.4.0Mar 9, 2017 UnknownJetBrains.Annotations 8 → 98.0.5 → 9.2.0Aug 11, 2015 UnknownJetBrains.Annotations 7 → 87.0.0 → 8.0.5Dec 17, 2014 UnknownJetBrains.Annotations 6 → 76.1.0 → 7.0.0Sep 12, 2012 Unknown
VersionChannelDateChangesSecurity
2026.2.0 StableJun 16, 2026No notes published2025.2.4 youStableNov 26, 2025No notes published2025.2.2 StableSep 1, 2025No notes published2025.2.1 StableAug 28, 2025No notes published2025.2.0 StableJul 22, 2025No notes published2025.1.0-eap1 DevJan 27, 2025No notes published2024.3.0 StableOct 24, 2024No notes published2024.3.0-eap1 DevOct 11, 2024No notes published2024.2.0 StableJul 5, 2024No notes published2024.2.0-eap1 DevMay 13, 2024No notes published2023.3.0 StableNov 7, 2023No notes published2023.3.0-eap4 DevOct 30, 2023No notes published2023.3.0-eap3 DevOct 20, 2023No notes published2023.3.0-eap2 YankedOct 20, 2026No notes published2023.3.0-eap1 YankedOct 20, 2026No notes published2023.2.0 StableJul 4, 2023No notes published2023.2.0-eap4 YankedOct 20, 2026No notes published2023.2.0-eap3 DevMay 11, 2023No notes published2023.2.0-eap2 DevApr 18, 2023No notes published2023.2.0-eap1 DevMar 8, 2023No changes listed