diff --git a/Directory.Build.props b/Directory.Build.props
new file mode 100644
index 0000000..7b5f8cf
--- /dev/null
+++ b/Directory.Build.props
@@ -0,0 +1,18 @@
+<Project>
+    <PropertyGroup>
+        <GenerateDocumentationFile>true</GenerateDocumentationFile>
+        <NoWarn>$(NoWarn);CS1591</NoWarn>
+
+        <!-- NuGet Packaging -->
+        <PackageVersion>$(Version)</PackageVersion>
+        <Company>Cysharp</Company>
+        <Authors>Cysharp</Authors>
+        <Copyright>© Cysharp, Inc.</Copyright>
+        <PackageProjectUrl>https://github.com/Cysharp/ObservableCollections</PackageProjectUrl>
+        <RepositoryUrl>$(PackageProjectUrl)</RepositoryUrl>
+        <RepositoryType>git</RepositoryType>
+        <PackageLicenseExpression>MIT</PackageLicenseExpression>
+        <PackageIcon>Icon.png</PackageIcon>
+        <AssemblyOriginatorKeyFile>$(MSBuildThisFileDirectory)opensource.snk</AssemblyOriginatorKeyFile>
+    </PropertyGroup>
+</Project>
diff --git a/opensource.snk b/opensource.snk
new file mode 100644
index 0000000..8ca75fe
Binary files /dev/null and b/opensource.snk differ
diff --git a/src/ObservableCollections/Icon.png b/src/ObservableCollections/Icon.png
new file mode 100644
index 0000000..68d64b1
Binary files /dev/null and b/src/ObservableCollections/Icon.png differ
diff --git a/src/ObservableCollections/ObservableCollections.csproj b/src/ObservableCollections/ObservableCollections.csproj
index a2219ed..fbd4c20 100644
--- a/src/ObservableCollections/ObservableCollections.csproj
+++ b/src/ObservableCollections/ObservableCollections.csproj
@@ -4,12 +4,21 @@
         <TargetFrameworks>netstandard2.0;netstandard2.1;net5.0;net6.0</TargetFrameworks>
         <Nullable>enable</Nullable>
         <LangVersion>10.0</LangVersion>
+
+        <!-- NuGet Packaging -->
+        <PackageTags>collection</PackageTags>
+        <Description>High performance observable collections and synchronized views, for WPF, Blazor, Unity.</Description>
+        <SignAssembly>true</SignAssembly>
     </PropertyGroup>
 
     <ItemGroup Condition="$(TargetFramework) == 'netstandard2.0'">
         <PackageReference Include="System.Memory" Version="4.5.4" />
     </ItemGroup>
 
+    <ItemGroup>
+        <None Include="Icon.png" Pack="true" PackagePath="/" />
+    </ItemGroup>
+
     <!-- PostBuild copy should run only once so use Condition. -->
     <Target Name="PostBuild" AfterTargets="PostBuildEvent" Condition="$(TargetFramework) == 'netstandard2.0'">
         <PropertyGroup>
@@ -20,7 +29,7 @@
         </ItemGroup>
 
         <Copy SourceFiles="@(CopySource)" DestinationFiles="$(DestinationRoot)\%(RecursiveDir)%(Filename)%(Extension)" SkipUnchangedFiles="true" UseHardlinksIfPossible="false" />
-        
+
         <!-- After copy, replace for unity codes -->
         <Exec Command="dotnet run -c $(ConfigurationName) --project $(MSBuildProjectDirectory)\..\..\tools\PostBuildUtility\PostBuildUtility.csproj -- replace-to-unity $(DestinationRoot)" />
     </Target>