diff --git a/Directory.Build.props b/Directory.Build.props
index 7a721968..1c9369f9 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -14,9 +14,6 @@
     <RepositoryRoot>$(MSBuildThisFileDirectory)</RepositoryRoot>
     <AssemblyOriginatorKeyFile>$(MSBuildThisFileDirectory)build\Key.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
-    <AssemblySigningCertName>Microsoft</AssemblySigningCertName>
-    <PackageSigningCertName>MicrosoftNuGet</PackageSigningCertName>
-    <PublicSign Condition="'$(OS)' != 'Windows_NT'">true</PublicSign>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <!-- Workaround microsoft/msbuild#3626 -->
     <AddSyntheticProjectReferencesForSolutionDependencies>false</AddSyntheticProjectReferencesForSolutionDependencies>
diff --git a/build/dependencies.props b/build/dependencies.props
index e8667b81..df6f1add 100644
--- a/build/dependencies.props
+++ b/build/dependencies.props
@@ -69,6 +69,8 @@
     <NETStandardLibrary20PackageVersion>2.0.3</NETStandardLibrary20PackageVersion>
     <SystemComponentModelAnnotationsPackageVersion>4.6.0-preview1-26907-04</SystemComponentModelAnnotationsPackageVersion>
     <XunitAnalyzersPackageVersion>0.10.0</XunitAnalyzersPackageVersion>
+    <XunitAssertPackageVersion>2.3.1</XunitAssertPackageVersion>
+    <XunitExtensibilityCorePackageVersion>2.3.1</XunitExtensibilityCorePackageVersion>
     <XunitPackageVersion>2.3.1</XunitPackageVersion>
     <XunitRunnerVisualStudioPackageVersion>2.4.0</XunitRunnerVisualStudioPackageVersion>
   </PropertyGroup>
diff --git a/src/Service.Specification.Tests/Microsoft.AspNetCore.Identity.Service.Specification.Tests.csproj b/src/Service.Specification.Tests/Microsoft.AspNetCore.Identity.Service.Specification.Tests.csproj
index f6975aea..8a9417cd 100644
--- a/src/Service.Specification.Tests/Microsoft.AspNetCore.Identity.Service.Specification.Tests.csproj
+++ b/src/Service.Specification.Tests/Microsoft.AspNetCore.Identity.Service.Specification.Tests.csproj
@@ -20,7 +20,9 @@
     <PackageReference Include="Microsoft.Extensions.Configuration" Version="$(MicrosoftExtensionsConfigurationPackageVersion)" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="$(MicrosoftExtensionsDependencyInjectionPackageVersion)" />
     <PackageReference Include="Microsoft.Extensions.Logging" Version="$(MicrosoftExtensionsLoggingPackageVersion)" />
-    <PackageReference Include="xunit" Version="$(XunitPackageVersion)" />
+    <PackageReference Include="xunit.assert" Version="$(XunitAssertPackageVersion)" />
+    <PackageReference Include="xunit.extensibility.core" Version="$(XunitExtensibilityCorePackageVersion)" />
+    <PackageReference Include="xunit.analyzers" Version="$(XunitAnalyzersPackageVersion)" PrivateAssets="All" />
   </ItemGroup>
 
 </Project>
diff --git a/src/Specification.Tests/Microsoft.AspNetCore.Identity.Specification.Tests.csproj b/src/Specification.Tests/Microsoft.AspNetCore.Identity.Specification.Tests.csproj
index c987d8fa..3194032c 100644
--- a/src/Specification.Tests/Microsoft.AspNetCore.Identity.Specification.Tests.csproj
+++ b/src/Specification.Tests/Microsoft.AspNetCore.Identity.Specification.Tests.csproj
@@ -16,7 +16,9 @@
     <PackageReference Include="Microsoft.Extensions.Configuration" Version="$(MicrosoftExtensionsConfigurationPackageVersion)" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="$(MicrosoftExtensionsDependencyInjectionPackageVersion)" />
     <PackageReference Include="Microsoft.Extensions.Logging" Version="$(MicrosoftExtensionsLoggingPackageVersion)" />
-    <PackageReference Include="xunit" Version="$(XunitPackageVersion)" />
+    <PackageReference Include="xunit.assert" Version="$(XunitAssertPackageVersion)" />
+    <PackageReference Include="xunit.extensibility.core" Version="$(XunitExtensibilityCorePackageVersion)" />
+    <PackageReference Include="xunit.analyzers" Version="$(XunitAnalyzersPackageVersion)" PrivateAssets="All" />
   </ItemGroup>
 
 </Project>
diff --git a/src/UI/Microsoft.AspNetCore.Identity.UI.csproj b/src/UI/Microsoft.AspNetCore.Identity.UI.csproj
index 69ee3f02..7631fb16 100644
--- a/src/UI/Microsoft.AspNetCore.Identity.UI.csproj
+++ b/src/UI/Microsoft.AspNetCore.Identity.UI.csproj
@@ -20,7 +20,7 @@
     <EmbeddedResource Remove="wwwroot/**/LICENSE*" />
     <None Remove="wwwroot/**/.bower.json" />
     <None Remove="wwwroot/**/LICENSE*" />
-    <None Include="THIRD-PARTY-NOTICES" Pack="true" PackagePath="/" />
+    <None Include="THIRD-PARTY-NOTICES.txt" Pack="true" PackagePath="/" />
 
     <Content Update="**\*.cshtml" Pack="false" />
   </ItemGroup>
diff --git a/src/UI/THIRD-PARTY-NOTICES b/src/UI/THIRD-PARTY-NOTICES.txt
similarity index 100%
rename from src/UI/THIRD-PARTY-NOTICES
rename to src/UI/THIRD-PARTY-NOTICES.txt