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JetBrains.Annotations package icon

JetBrains.Annotations

v2026.2.0

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.

ControlFlow jetbrains
jetbrains resharper rider annotations canbenull notnull
NuGet Stats Changelog
Total Downloads
464.7M
464,689,065
Published
Jun 16, 2026
Latest stable version

Install

.NET CLI
dotnet add package JetBrains.Annotations --version 2026.2.0
Package Manager Console
Install-Package JetBrains.Annotations -Version 2026.2.0
PackageReference
<PackageReference Include="JetBrains.Annotations" Version="2026.2.0" />

Frameworks

.NETFramework2.0 .NETPortable4.0-Profile328 .NETStandard1.0 .NETStandard2.0

Dependencies

System.Runtime
.NETStandard1.0
[4.1.0, )