diff --git a/eng/Directory.Packages.props b/eng/Directory.Packages.props
index c06d510b7571d..8b0c5a473de71 100644
--- a/eng/Directory.Packages.props
+++ b/eng/Directory.Packages.props
@@ -5,7 +5,7 @@
     <MicrosoftCodeAnalysisNetAnalyzersVersion>8.0.0-preview.23468.1</MicrosoftCodeAnalysisNetAnalyzersVersion>
     <MicrosoftCodeAnalysisTestingVersion>1.1.3-beta1.24319.1</MicrosoftCodeAnalysisTestingVersion>
     <MicrosoftVisualStudioExtensibilityTestingVersion>0.1.796-beta</MicrosoftVisualStudioExtensibilityTestingVersion>
-    <_BasicReferenceAssembliesVersion>1.7.9</_BasicReferenceAssembliesVersion>
+    <_BasicReferenceAssembliesVersion>1.8.3</_BasicReferenceAssembliesVersion>
     <!-- CodeStyleAnalyzerVersion should we updated together with version of dotnet-format in dotnet-tools.json -->
     <CodeStyleAnalyzerVersion>4.8.0-3.final</CodeStyleAnalyzerVersion>
     <VisualStudioEditorPackagesVersion>17.13.226</VisualStudioEditorPackagesVersion>
@@ -297,6 +297,7 @@
     <PackageVersion Include="Basic.Reference.Assemblies.Net461" Version="$(_BasicReferenceAssembliesVersion)" />
     <PackageVersion Include="Basic.Reference.Assemblies.NetStandard13" Version="$(_BasicReferenceAssembliesVersion)" />
     <PackageVersion Include="Basic.Reference.Assemblies.Net90" Version="$(_BasicReferenceAssembliesVersion)" />
+    <PackageVersion Include="Basic.Reference.Assemblies.Net100" Version="$(_BasicReferenceAssembliesVersion)" />
     <PackageVersion Include="Microsoft.TeamFoundationServer.Client" Version="19.232.0-preview" />
     <PackageVersion Include="System.Data.SqlClient" Version="$(SystemDataSqlClientVersion)" />
     <!-- fix of vulnerability in 6.0.0 coming via Microsoft.TeamFoundationServer.Client -->
diff --git a/src/Compilers/CSharp/Test/Emit/Microsoft.CodeAnalysis.CSharp.Emit.UnitTests.csproj b/src/Compilers/CSharp/Test/Emit/Microsoft.CodeAnalysis.CSharp.Emit.UnitTests.csproj
index a79819fbe934a..a3b0da3b6e01f 100644
--- a/src/Compilers/CSharp/Test/Emit/Microsoft.CodeAnalysis.CSharp.Emit.UnitTests.csproj
+++ b/src/Compilers/CSharp/Test/Emit/Microsoft.CodeAnalysis.CSharp.Emit.UnitTests.csproj
@@ -28,6 +28,7 @@
     <PackageReference Include="Basic.Reference.Assemblies.Net60" />
     <PackageReference Include="Basic.Reference.Assemblies.Net80" />
     <PackageReference Include="Basic.Reference.Assemblies.Net90" />
+    <PackageReference Include="Basic.Reference.Assemblies.Net100" />
   </ItemGroup>
   <ItemGroup>
   </ItemGroup>
@@ -35,4 +36,4 @@
     <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
   </ItemGroup>
   <Import Project="$(RepositoryEngineeringDir)targets\ILAsm.targets" />
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/Compilers/Test/Core/TargetFrameworkUtil.cs b/src/Compilers/Test/Core/TargetFrameworkUtil.cs
index 2b7ed086309ed..8632eacb295f2 100644
--- a/src/Compilers/Test/Core/TargetFrameworkUtil.cs
+++ b/src/Compilers/Test/Core/TargetFrameworkUtil.cs
@@ -89,6 +89,7 @@ public enum TargetFramework
         Net70,
         Net80,
         Net90,
+        Net100,
     }
 
     /// <summary>
@@ -306,6 +307,7 @@ static TargetFrameworkUtil()
             TargetFramework.NetCoreApp or TargetFramework.Net70 => ImmutableArray.CreateRange<MetadataReference>(Net70.References.All),
             TargetFramework.Net80 => ImmutableArray.CreateRange<MetadataReference>(LoadDynamicReferences("Net80")),
             TargetFramework.Net90 => ImmutableArray.CreateRange<MetadataReference>(LoadDynamicReferences("Net90")),
+            TargetFramework.Net100 => ImmutableArray.CreateRange<MetadataReference>(LoadDynamicReferences("Net100")),
             TargetFramework.NetFramework => NetFramework.References,
             TargetFramework.NetLatest => NetLatest,
             TargetFramework.Standard => StandardReferences,