diff --git a/.github/workflows/build-debug.yaml b/.github/workflows/build-debug.yaml
index 2d0e2f5..6374523 100644
--- a/.github/workflows/build-debug.yaml
+++ b/.github/workflows/build-debug.yaml
@@ -17,8 +17,9 @@ jobs:
     steps:
       - uses: Cysharp/Actions/.github/actions/checkout@main
       - uses: Cysharp/Actions/.github/actions/setup-dotnet@main
-      - run: dotnet build -c Debug
-      - run: dotnet test tests/ZString.Tests -c Debug
+      - run: dotnet build -c Release
+      - run: dotnet test -c Release --no-build
+      - run: dotnet pack -c Release --no-build -p:IncludeSymbols=true -p:SymbolPackageFormat=snupkg -o $GITHUB_WORKSPACE/artifacts
 
   build-unity:
     if: ${{ (github.event_name == 'push' && github.repository_owner == 'Cysharp') || startsWith(github.event.pull_request.head.label, 'Cysharp:') }}
diff --git a/Directory.Build.props b/Directory.Build.props
new file mode 100644
index 0000000..1abbbe1
--- /dev/null
+++ b/Directory.Build.props
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <!-- NuGet Package Information -->
+    <PackageVersion>$(Version)</PackageVersion>
+    <Company>Cysharp</Company>
+    <Authors>Cysharp</Authors>
+    <Copyright>© Cysharp, Inc.</Copyright>
+    <PackageTags>string;</PackageTags>
+    <PackageProjectUrl>https://github.com/Cysharp/ZString</PackageProjectUrl>
+    <PackageReadmeFile>README.md</PackageReadmeFile>
+    <RepositoryUrl>$(PackageProjectUrl)</RepositoryUrl>
+    <RepositoryType>git</RepositoryType>
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
+    <PackageIcon>Icon.png</PackageIcon>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <None Include="$(MSBuildThisFileDirectory)README.md" Pack="true" PackagePath="\" />
+    <None Include="$(MSBuildThisFileDirectory)Icon.png" Pack="true" PackagePath="\" />
+  </ItemGroup>
+</Project>
diff --git a/src/ZString/Icon.png b/Icon.png
similarity index 100%
rename from src/ZString/Icon.png
rename to Icon.png
diff --git a/src/ZString/ZString.csproj b/src/ZString/ZString.csproj
index f30c041..b2de3d2 100644
--- a/src/ZString/ZString.csproj
+++ b/src/ZString/ZString.csproj
@@ -10,25 +10,11 @@
 		<NoWarn>1701;1702;1591</NoWarn>
 
 		<!-- NuGet Packaging -->
-		<PackageVersion>$(Version)</PackageVersion>
-		<Company>Cysharp</Company>
-		<Authors>Cysharp</Authors>
-		<Copyright>© Cysharp, Inc.</Copyright>
-		<PackageTags>string;</PackageTags>
 		<Description>Zero allocation StringBuilder for .NET Core and Unity.</Description>
-		<PackageProjectUrl>https://github.com/Cysharp/ZString</PackageProjectUrl>
-		<RepositoryUrl>$(PackageProjectUrl)</RepositoryUrl>
-		<RepositoryType>git</RepositoryType>
-		<PackageLicenseExpression>MIT</PackageLicenseExpression>
 		<SignAssembly>true</SignAssembly>
 		<AssemblyOriginatorKeyFile>../../opensource.snk</AssemblyOriginatorKeyFile>
-		<PackageIcon>Icon.png</PackageIcon>
 	</PropertyGroup>
 
-	<ItemGroup>
-		<None Include="Icon.png" Pack="true" PackagePath="/" />
-	</ItemGroup>
-
 	<ItemGroup Condition="$(TargetFramework) == 'netstandard2.1'">
 		<PackageReference Include="System.Runtime.CompilerServices.Unsafe" Version="6.0.0" />
 	</ItemGroup>