diff --git a/Directory.Build.props b/Directory.Build.props
index c4bcb9a6255898..9d7c7f3171f9e6 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -72,6 +72,8 @@
     <RuntimeIdGraphDefinitionFile>$([MSBuild]::NormalizePath('$(LibrariesProjectRoot)', 'pkg', 'Microsoft.NETCore.Platforms', 'runtime.json'))</RuntimeIdGraphDefinitionFile>
     <LicenseFile>$(RepoRoot)LICENSE.TXT</LicenseFile>
 
+    <RestoreAdditionalProjectSources><PATH-TO-YOUR-ROSLYN-ENLISTMENT>\artifacts\packages\Debug\Shipping\</RestoreAdditionalProjectSources>
+
     <!-- Indicates this is not an officially supported release. Release branches should set this to false. -->
     <!-- Keep it in sync with PRERELEASE in eng/native/configureplatform.cmake -->
     <IsPrerelease>true</IsPrerelease>
diff --git a/eng/Versions.props b/eng/Versions.props
index 45e7544148047e..f141c1476fb77a 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -16,6 +16,7 @@
     <DotNetFinalVersionKind Condition="'$(StabilizePackageVersion)' == 'true'">release</DotNetFinalVersionKind>
     <!-- Opt-in/out repo features -->
     <UsingToolMicrosoftNetCompilers>true</UsingToolMicrosoftNetCompilers>
+    <MicrosoftNetCompilersToolsetVersion>3.8.0-dev</MicrosoftNetCompilersToolsetVersion>
     <UsingToolIbcOptimization>true</UsingToolIbcOptimization>
     <UsingToolXliff>false</UsingToolXliff>
     <UsingToolNetFrameworkReferenceAssemblies>true</UsingToolNetFrameworkReferenceAssemblies>