diff --git a/build/dependencies.props b/build/dependencies.props
index cc2dfb4046..524f6dfe2d 100644
--- a/build/dependencies.props
+++ b/build/dependencies.props
@@ -3,24 +3,25 @@
     <MSBuildAllProjects>$(MSBuildAllProjects);$(MSBuildThisFileFullPath)</MSBuildAllProjects>
   </PropertyGroup>
   <PropertyGroup Label="Package Versions">
-    <InternalAspNetCoreSdkPackageVersion>2.1.0-preview3-17018</InternalAspNetCoreSdkPackageVersion>
-    <MicrosoftAspNetCoreAuthenticationCookiesPackageVersion>2.1.0-preview3-32233</MicrosoftAspNetCoreAuthenticationCookiesPackageVersion>
-    <MicrosoftAspNetCoreHostingPackageVersion>2.1.0-preview3-32233</MicrosoftAspNetCoreHostingPackageVersion>
-    <MicrosoftAspNetCoreMvcPackageVersion>2.1.0-preview3-32233</MicrosoftAspNetCoreMvcPackageVersion>
-    <MicrosoftAspNetCoreMvcRazorPagesPackageVersion>2.1.0-preview3-32233</MicrosoftAspNetCoreMvcRazorPagesPackageVersion>
-    <MicrosoftAspNetCoreRazorDesignPackageVersion>2.1.0-preview3-32233</MicrosoftAspNetCoreRazorDesignPackageVersion>
-    <MicrosoftAspNetCoreRazorRuntimePackageVersion>2.1.0-preview3-32233</MicrosoftAspNetCoreRazorRuntimePackageVersion>
-    <MicrosoftAspNetCoreServerIntegrationTestingPackageVersion>0.5.0-preview2-32233</MicrosoftAspNetCoreServerIntegrationTestingPackageVersion>
-    <MicrosoftAspNetCoreServerKestrelPackageVersion>2.1.0-preview3-32233</MicrosoftAspNetCoreServerKestrelPackageVersion>
-    <MicrosoftAspNetCoreTestingPackageVersion>2.1.0-preview3-32233</MicrosoftAspNetCoreTestingPackageVersion>
+    <InternalAspNetCoreSdkPackageVersion>2.1.0-rc1-15773</InternalAspNetCoreSdkPackageVersion>
+    <MicrosoftAspNetCoreAuthenticationCookiesPackageVersion>2.1.0-rc1-30611</MicrosoftAspNetCoreAuthenticationCookiesPackageVersion>
+    <MicrosoftAspNetCoreHostingPackageVersion>2.1.0-rc1-30611</MicrosoftAspNetCoreHostingPackageVersion>
+    <MicrosoftAspNetCoreMvcPackageVersion>2.1.0-rc1-30611</MicrosoftAspNetCoreMvcPackageVersion>
+    <MicrosoftAspNetCoreMvcRazorPagesPackageVersion>2.1.0-rc1-30611</MicrosoftAspNetCoreMvcRazorPagesPackageVersion>
+    <MicrosoftAspNetCoreRazorDesignPackageVersion>2.1.0-rc1-30611</MicrosoftAspNetCoreRazorDesignPackageVersion>
+    <MicrosoftAspNetCoreRazorRuntimePackageVersion>2.1.0-rc1-30611</MicrosoftAspNetCoreRazorRuntimePackageVersion>
+    <MicrosoftAspNetCoreServerIntegrationTestingPackageVersion>0.5.0-preview2-30611</MicrosoftAspNetCoreServerIntegrationTestingPackageVersion>
+    <MicrosoftAspNetCoreServerKestrelPackageVersion>2.1.0-rc1-30611</MicrosoftAspNetCoreServerKestrelPackageVersion>
+    <MicrosoftAspNetCoreTestingPackageVersion>2.1.0-rc1-30611</MicrosoftAspNetCoreTestingPackageVersion>
     <MicrosoftBuildTasksCorePackageVersion>15.6.82</MicrosoftBuildTasksCorePackageVersion>
-    <MicrosoftExtensionsCommandLineUtilsSourcesPackageVersion>2.1.0-preview3-32233</MicrosoftExtensionsCommandLineUtilsSourcesPackageVersion>
-    <MicrosoftExtensionsConfigurationCommandLinePackageVersion>2.1.0-preview3-32233</MicrosoftExtensionsConfigurationCommandLinePackageVersion>
-    <MicrosoftExtensionsLoggingConsolePackageVersion>2.1.0-preview3-32233</MicrosoftExtensionsLoggingConsolePackageVersion>
-    <MicrosoftExtensionsLoggingPackageVersion>2.1.0-preview3-32233</MicrosoftExtensionsLoggingPackageVersion>
-    <MicrosoftExtensionsLoggingTestingPackageVersion>2.1.0-preview3-32233</MicrosoftExtensionsLoggingTestingPackageVersion>
+    <MicrosoftExtensionsCommandLineUtilsSourcesPackageVersion>2.1.0-rc1-30611</MicrosoftExtensionsCommandLineUtilsSourcesPackageVersion>
+    <MicrosoftExtensionsConfigurationCommandLinePackageVersion>2.1.0-rc1-30611</MicrosoftExtensionsConfigurationCommandLinePackageVersion>
+    <MicrosoftExtensionsLoggingConsolePackageVersion>2.1.0-rc1-30611</MicrosoftExtensionsLoggingConsolePackageVersion>
+    <MicrosoftExtensionsLoggingPackageVersion>2.1.0-rc1-30611</MicrosoftExtensionsLoggingPackageVersion>
+    <MicrosoftExtensionsLoggingTestingPackageVersion>2.1.0-rc1-30611</MicrosoftExtensionsLoggingTestingPackageVersion>
     <MicrosoftNETCoreApp20PackageVersion>2.0.0</MicrosoftNETCoreApp20PackageVersion>
     <MicrosoftNETCoreApp21PackageVersion>2.1.0-preview3-26413-05</MicrosoftNETCoreApp21PackageVersion>
+    <MicrosoftNETSdkRazorPackageVersion>2.1.0-rc1-30611</MicrosoftNETSdkRazorPackageVersion>
     <MicrosoftNETTestSdkPackageVersion>15.6.1</MicrosoftNETTestSdkPackageVersion>
     <XunitPackageVersion>2.3.1</XunitPackageVersion>
     <XunitRunnerVisualStudioPackageVersion>2.4.0-beta.1.build3945</XunitRunnerVisualStudioPackageVersion>
diff --git a/korebuild-lock.txt b/korebuild-lock.txt
index b419d767b9..a14b357adf 100644
--- a/korebuild-lock.txt
+++ b/korebuild-lock.txt
@@ -1,2 +1,2 @@
-version:2.1.0-preview3-17018
-commithash:af264ca131f212b5ba8aafbc5110fc0fc510a2be
+version:2.1.0-rc1-15773
+commithash:278888c83096a013848809db3cd79c8ddc27d176
diff --git a/testapps/ApplicationWithRazorSdkNeitherUsed/ApplicationWithRazorSdkNeitherUsed.csproj b/testapps/ApplicationWithRazorSdkNeitherUsed/ApplicationWithRazorSdkNeitherUsed.csproj
index b7501d5fa6..97c4916e21 100644
--- a/testapps/ApplicationWithRazorSdkNeitherUsed/ApplicationWithRazorSdkNeitherUsed.csproj
+++ b/testapps/ApplicationWithRazorSdkNeitherUsed/ApplicationWithRazorSdkNeitherUsed.csproj
@@ -14,6 +14,7 @@
     <PackageReference Include="Microsoft.AspNetCore.Server.Kestrel" Version="$(MicrosoftAspNetCoreServerKestrelPackageVersion)" />
     <PackageReference Include="Microsoft.Extensions.Configuration.CommandLine" Version="$(MicrosoftExtensionsConfigurationCommandLinePackageVersion)" />
     <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="$(MicrosoftExtensionsLoggingConsolePackageVersion)" />
+    <PackageReference Include="Microsoft.NET.Sdk.Razor" Version="$(MicrosoftNETSdkRazorPackageVersion)" PrivateAssets="All" />
   </ItemGroup>
 
 </Project>
diff --git a/testapps/ApplicationWithRazorSdkPrecompilationUsed/ApplicationWithRazorSdkPrecompilationUsed.csproj b/testapps/ApplicationWithRazorSdkPrecompilationUsed/ApplicationWithRazorSdkPrecompilationUsed.csproj
index 3e106326fa..653d7c7a94 100644
--- a/testapps/ApplicationWithRazorSdkPrecompilationUsed/ApplicationWithRazorSdkPrecompilationUsed.csproj
+++ b/testapps/ApplicationWithRazorSdkPrecompilationUsed/ApplicationWithRazorSdkPrecompilationUsed.csproj
@@ -14,6 +14,7 @@
     <PackageReference Include="Microsoft.AspNetCore.Server.Kestrel" Version="$(MicrosoftAspNetCoreServerKestrelPackageVersion)" />
     <PackageReference Include="Microsoft.Extensions.Configuration.CommandLine" Version="$(MicrosoftExtensionsConfigurationCommandLinePackageVersion)" />
     <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="$(MicrosoftExtensionsLoggingConsolePackageVersion)" />
+    <PackageReference Include="Microsoft.NET.Sdk.Razor" Version="$(MicrosoftNETSdkRazorPackageVersion)" PrivateAssets="All" />
   </ItemGroup>
 
 </Project>
diff --git a/testapps/ApplicationWithRazorSdkUsed/ApplicationWithRazorSdkUsed.csproj b/testapps/ApplicationWithRazorSdkUsed/ApplicationWithRazorSdkUsed.csproj
index faaac76d5b..abe44b964e 100644
--- a/testapps/ApplicationWithRazorSdkUsed/ApplicationWithRazorSdkUsed.csproj
+++ b/testapps/ApplicationWithRazorSdkUsed/ApplicationWithRazorSdkUsed.csproj
@@ -9,6 +9,7 @@
     <PackageReference Include="Microsoft.AspNetCore.Server.Kestrel" Version="$(MicrosoftAspNetCoreServerKestrelPackageVersion)" />
     <PackageReference Include="Microsoft.Extensions.Configuration.CommandLine" Version="$(MicrosoftExtensionsConfigurationCommandLinePackageVersion)" />
     <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="$(MicrosoftExtensionsLoggingConsolePackageVersion)" />
+    <PackageReference Include="Microsoft.NET.Sdk.Razor" Version="$(MicrosoftNETSdkRazorPackageVersion)" PrivateAssets="All" />
   </ItemGroup>
 
 </Project>