diff --git a/eng/Versions.props b/eng/Versions.props
index f61a4bd440..d12915f174 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -65,7 +65,7 @@
     <MicrosoftVSSDKBuildToolsVersion>17.14.2119</MicrosoftVSSDKBuildToolsVersion>
     <MicrosoftWin32RegistryVersion>5.0.0</MicrosoftWin32RegistryVersion>
     <NewtonsoftJsonVersion>13.0.3</NewtonsoftJsonVersion>
-    <SystemCollectionsImmutableVersion>8.0.0</SystemCollectionsImmutableVersion>
+    <SystemCollectionsImmutableVersion>9.0.0</SystemCollectionsImmutableVersion>
     <SystemMemoryVersion>4.5.5</SystemMemoryVersion>
     <SystemReflectionMetadataVersion>8.0.0</SystemReflectionMetadataVersion>
     <TestPlatformExternalsVersion>18.0.0-preview-1-10911-061</TestPlatformExternalsVersion>
diff --git a/src/datacollector/app.config b/src/datacollector/app.config
index 8e3b9f898c..eb75311e99 100644
--- a/src/datacollector/app.config
+++ b/src/datacollector/app.config
@@ -26,7 +26,7 @@
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="1.0.0.0-8.0.0.0" newVersion="8.0.0.0" />
+        <bindingRedirect oldVersion="1.0.0.0-9.0.0.0" newVersion="9.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Reflection.Metadata" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
diff --git a/src/package/Microsoft.TestPlatform.CLI/Microsoft.TestPlatform.CLI.csproj b/src/package/Microsoft.TestPlatform.CLI/Microsoft.TestPlatform.CLI.csproj
index 871ef099ab..696cb68cbf 100644
--- a/src/package/Microsoft.TestPlatform.CLI/Microsoft.TestPlatform.CLI.csproj
+++ b/src/package/Microsoft.TestPlatform.CLI/Microsoft.TestPlatform.CLI.csproj
@@ -31,6 +31,8 @@
     <ResolveAssemblyWarnOrErrorOnTargetArchitectureMismatch>None</ResolveAssemblyWarnOrErrorOnTargetArchitectureMismatch>
     <!-- NU5100: No dlls in lib folder -->
     <NoWarn>$(NoWarn);NU5100</NoWarn>
+    <!-- NU1510: PackageReference will not be pruned. Consider removing this package from your dependencies, as it is likely unnecessary. -->
+    <NoWarn>$(NoWarn);NU1510</NoWarn>
     <!--
       Sometimes NU1702 is not suppressed correctly, so force reducing severity of the warning.
       See https://github.com/NuGet/Home/issues/9147
@@ -82,6 +84,7 @@
     <PackageReference Include="Microsoft.Diagnostics.NETCore.Client" Version="$(MicrosoftDiagnosticsNETCoreClientVersion)" PrivateAssets="All" GeneratePathProperty="true" />
     <PackageReference Include="Microsoft.Internal.Dia" Version="$(TestPlatformMSDiaVersion)" PrivateAssets="All" GeneratePathProperty="true" Condition="'$(TargetFramework)'=='$(NetFrameworkRunnerTargetFramework)'" />
     <PackageReference Include="Newtonsoft.Json" Version="$(NewtonsoftJsonVersion)" GeneratePathProperty="true" Condition="'$(TargetFramework)' != 'NetFrameworkRunnerTargetFramework'" />
+    <PackageReference Include="System.Collections.Immutable" Version="$(SystemCollectionsImmutableVersion)" GeneratePathProperty="true" />
   </ItemGroup>
 
   <Target Name="CopyFiles" AfterTargets="Build">
@@ -93,6 +96,7 @@
       <MicrosoftInternalDia Include="$(PkgMicrosoft_Internal_Dia)\tools\netstandard\**\*"></MicrosoftInternalDia>
       <MicrosoftDiagnosticsNETCoreClient Include="$(PkgMicrosoft_Diagnostics_NETCore_Client)\lib\netstandard2.0\**\*"></MicrosoftDiagnosticsNETCoreClient>
       <MicrosoftInternalDia Include="$(PkgMicrosoft_Internal_Dia)\tools\net451\**\*"></MicrosoftInternalDia>
+      <SystemCollectionsImmutableFiles Include="$(PkgSystem_Collections_Immutable)\lib\netstandard2.0\*"></SystemCollectionsImmutableFiles>
     </ItemGroup>
 
     <Copy SourceFiles="@(MicrosoftCodeCoverageIO)" DestinationFiles="$(OutDir)\Microsoft.CodeCoverage.IO\%(RecursiveDir)%(Filename)%(Extension)" Condition="'$(DotNetBuildSourceOnly)' != 'true'" />
@@ -101,6 +105,7 @@
     <Copy SourceFiles="@(NewtonsoftJson)" DestinationFiles="$(OutDir)\Newtonsoft.Json\%(RecursiveDir)%(Filename)%(Extension)" />
     <Copy SourceFiles="@(MicrosoftDiagnosticsNETCoreClient)" DestinationFiles="$(OutDir)\Microsoft.Diagnostics.NETCore.Client\%(RecursiveDir)%(Filename)%(Extension)" />
     <Copy SourceFiles="@(MicrosoftInternalDia)" DestinationFiles="$(OutDir)\Microsoft.Internal.Dia\%(RecursiveDir)%(Filename)%(Extension)" />
+    <Copy SourceFiles="@(SystemCollectionsImmutableFiles)" DestinationFiles="$(OutDir)\%(RecursiveDir)%(Filename)%(Extension)" />
   </Target>
 
 </Project>
diff --git a/src/testhost.x86/app.config b/src/testhost.x86/app.config
index 61d2d0fa06..1ceed9a61a 100644
--- a/src/testhost.x86/app.config
+++ b/src/testhost.x86/app.config
@@ -39,7 +39,7 @@
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="1.0.0.0-8.0.0.0" newVersion="8.0.0.0" />
+        <bindingRedirect oldVersion="1.0.0.0-9.0.0.0" newVersion="9.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Reflection.Metadata" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
diff --git a/src/vstest.console/app.config b/src/vstest.console/app.config
index 9132c7fde7..17aac52bd1 100644
--- a/src/vstest.console/app.config
+++ b/src/vstest.console/app.config
@@ -31,7 +31,7 @@
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="1.0.0.0-8.0.0.0" newVersion="8.0.0.0" />
+        <bindingRedirect oldVersion="1.0.0.0-9.0.0.0" newVersion="9.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Reflection.Metadata" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />