diff --git a/build/dependencies.props b/build/dependencies.props
index 06c4004403..9d4b2d33af 100644
--- a/build/dependencies.props
+++ b/build/dependencies.props
@@ -3,24 +3,24 @@
     <MSBuildAllProjects>$(MSBuildAllProjects);$(MSBuildThisFileFullPath)</MSBuildAllProjects>
   </PropertyGroup>
   <PropertyGroup Label="Package Versions">
-    <InternalAspNetCoreSdkPackageVersion>2.1.0-preview1-15549</InternalAspNetCoreSdkPackageVersion>
-    <MicrosoftAspNetCoreDiagnosticsPackageVersion>2.1.0-preview1-27475</MicrosoftAspNetCoreDiagnosticsPackageVersion>
-    <MicrosoftAspNetCoreHostingPackageVersion>2.1.0-preview1-27475</MicrosoftAspNetCoreHostingPackageVersion>
-    <MicrosoftAspNetCoreRoutingPackageVersion>2.1.0-preview1-27475</MicrosoftAspNetCoreRoutingPackageVersion>
-    <MicrosoftAspNetCoreServerIISIntegrationPackageVersion>2.1.0-preview1-27475</MicrosoftAspNetCoreServerIISIntegrationPackageVersion>
-    <MicrosoftAspNetCoreServerIntegrationTestingPackageVersion>0.5.0-preview1-27475</MicrosoftAspNetCoreServerIntegrationTestingPackageVersion>
-    <MicrosoftAspNetCoreServerKestrelHttpsPackageVersion>2.1.0-preview1-27475</MicrosoftAspNetCoreServerKestrelHttpsPackageVersion>
-    <MicrosoftAspNetCoreServerKestrelPackageVersion>2.1.0-preview1-27475</MicrosoftAspNetCoreServerKestrelPackageVersion>
-    <MicrosoftAspNetCoreStaticFilesPackageVersion>2.1.0-preview1-27475</MicrosoftAspNetCoreStaticFilesPackageVersion>
-    <MicrosoftExtensionsConfigurationCommandLinePackageVersion>2.1.0-preview1-27475</MicrosoftExtensionsConfigurationCommandLinePackageVersion>
-    <MicrosoftExtensionsConfigurationEnvironmentVariablesPackageVersion>2.1.0-preview1-27475</MicrosoftExtensionsConfigurationEnvironmentVariablesPackageVersion>
-    <MicrosoftExtensionsConfigurationFileExtensionsPackageVersion>2.1.0-preview1-27475</MicrosoftExtensionsConfigurationFileExtensionsPackageVersion>
-    <MicrosoftExtensionsConfigurationJsonPackageVersion>2.1.0-preview1-27475</MicrosoftExtensionsConfigurationJsonPackageVersion>
-    <MicrosoftExtensionsConfigurationUserSecretsPackageVersion>2.1.0-preview1-27475</MicrosoftExtensionsConfigurationUserSecretsPackageVersion>
-    <MicrosoftExtensionsLoggingConfigurationPackageVersion>2.1.0-preview1-27475</MicrosoftExtensionsLoggingConfigurationPackageVersion>
-    <MicrosoftExtensionsLoggingConsolePackageVersion>2.1.0-preview1-27475</MicrosoftExtensionsLoggingConsolePackageVersion>
-    <MicrosoftExtensionsLoggingDebugPackageVersion>2.1.0-preview1-27475</MicrosoftExtensionsLoggingDebugPackageVersion>
-    <MicrosoftExtensionsLoggingPackageVersion>2.1.0-preview1-27475</MicrosoftExtensionsLoggingPackageVersion>
+    <InternalAspNetCoreSdkPackageVersion>2.1.0-preview1-15551</InternalAspNetCoreSdkPackageVersion>
+    <MicrosoftAspNetCoreDiagnosticsPackageVersion>2.1.0-preview1-27501</MicrosoftAspNetCoreDiagnosticsPackageVersion>
+    <MicrosoftAspNetCoreHostingPackageVersion>2.1.0-preview1-27501</MicrosoftAspNetCoreHostingPackageVersion>
+    <MicrosoftAspNetCoreRoutingPackageVersion>2.1.0-preview1-27501</MicrosoftAspNetCoreRoutingPackageVersion>
+    <MicrosoftAspNetCoreServerIISIntegrationPackageVersion>2.1.0-preview1-27501</MicrosoftAspNetCoreServerIISIntegrationPackageVersion>
+    <MicrosoftAspNetCoreServerIntegrationTestingPackageVersion>0.5.0-preview1-27501</MicrosoftAspNetCoreServerIntegrationTestingPackageVersion>
+    <MicrosoftAspNetCoreServerKestrelHttpsPackageVersion>2.1.0-preview1-27501</MicrosoftAspNetCoreServerKestrelHttpsPackageVersion>
+    <MicrosoftAspNetCoreServerKestrelPackageVersion>2.1.0-preview1-27501</MicrosoftAspNetCoreServerKestrelPackageVersion>
+    <MicrosoftAspNetCoreStaticFilesPackageVersion>2.1.0-preview1-27501</MicrosoftAspNetCoreStaticFilesPackageVersion>
+    <MicrosoftExtensionsConfigurationCommandLinePackageVersion>2.1.0-preview1-27501</MicrosoftExtensionsConfigurationCommandLinePackageVersion>
+    <MicrosoftExtensionsConfigurationEnvironmentVariablesPackageVersion>2.1.0-preview1-27501</MicrosoftExtensionsConfigurationEnvironmentVariablesPackageVersion>
+    <MicrosoftExtensionsConfigurationFileExtensionsPackageVersion>2.1.0-preview1-27501</MicrosoftExtensionsConfigurationFileExtensionsPackageVersion>
+    <MicrosoftExtensionsConfigurationJsonPackageVersion>2.1.0-preview1-27501</MicrosoftExtensionsConfigurationJsonPackageVersion>
+    <MicrosoftExtensionsConfigurationUserSecretsPackageVersion>2.1.0-preview1-27501</MicrosoftExtensionsConfigurationUserSecretsPackageVersion>
+    <MicrosoftExtensionsLoggingConfigurationPackageVersion>2.1.0-preview1-27501</MicrosoftExtensionsLoggingConfigurationPackageVersion>
+    <MicrosoftExtensionsLoggingConsolePackageVersion>2.1.0-preview1-27501</MicrosoftExtensionsLoggingConsolePackageVersion>
+    <MicrosoftExtensionsLoggingDebugPackageVersion>2.1.0-preview1-27501</MicrosoftExtensionsLoggingDebugPackageVersion>
+    <MicrosoftExtensionsLoggingPackageVersion>2.1.0-preview1-27501</MicrosoftExtensionsLoggingPackageVersion>
     <MicrosoftNETCoreApp20PackageVersion>2.0.0</MicrosoftNETCoreApp20PackageVersion>
     <MicrosoftNETTestSdkPackageVersion>15.3.0</MicrosoftNETTestSdkPackageVersion>
     <MoqPackageVersion>4.7.49</MoqPackageVersion>
diff --git a/korebuild-lock.txt b/korebuild-lock.txt
index 45463cc71e..86352477bb 100644
--- a/korebuild-lock.txt
+++ b/korebuild-lock.txt
@@ -1,2 +1,2 @@
-version:2.1.0-preview1-15549
-commithash:f570e08585fec510dd60cd4bfe8795388b757a95
+version:2.1.0-preview1-15551
+commithash:8fad9553b48533fddbb16a423ea55b9710ea2e63
diff --git a/samples/SampleApp/SampleApp.csproj b/samples/SampleApp/SampleApp.csproj
index eabea3b14b..ff3ecf9676 100644
--- a/samples/SampleApp/SampleApp.csproj
+++ b/samples/SampleApp/SampleApp.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk.Web">
+<Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
     <TargetFrameworks>netcoreapp2.0;net461</TargetFrameworks>
diff --git a/src/Microsoft.AspNetCore/Microsoft.AspNetCore.csproj b/src/Microsoft.AspNetCore/Microsoft.AspNetCore.csproj
index e183b31571..949e2a991c 100644
--- a/src/Microsoft.AspNetCore/Microsoft.AspNetCore.csproj
+++ b/src/Microsoft.AspNetCore/Microsoft.AspNetCore.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0</TargetFrameworks>
diff --git a/test/Microsoft.AspNetCore.FunctionalTests/Microsoft.AspNetCore.FunctionalTests.csproj b/test/Microsoft.AspNetCore.FunctionalTests/Microsoft.AspNetCore.FunctionalTests.csproj
index 27328c3da6..9a6bd04659 100644
--- a/test/Microsoft.AspNetCore.FunctionalTests/Microsoft.AspNetCore.FunctionalTests.csproj
+++ b/test/Microsoft.AspNetCore.FunctionalTests/Microsoft.AspNetCore.FunctionalTests.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFrameworks>netcoreapp2.0;net461</TargetFrameworks>
diff --git a/test/TestSites/CreateDefaultBuilderApp/CreateDefaultBuilderApp.csproj b/test/TestSites/CreateDefaultBuilderApp/CreateDefaultBuilderApp.csproj
index 0956c47f07..7b43959e2f 100644
--- a/test/TestSites/CreateDefaultBuilderApp/CreateDefaultBuilderApp.csproj
+++ b/test/TestSites/CreateDefaultBuilderApp/CreateDefaultBuilderApp.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
@@ -10,4 +10,4 @@
     <ProjectReference Include="..\..\..\src\Microsoft.AspNetCore\Microsoft.AspNetCore.csproj" />
   </ItemGroup>
 
-</Project>
\ No newline at end of file
+</Project>
diff --git a/test/TestSites/DependencyInjectionApp/DependencyInjectionApp.csproj b/test/TestSites/DependencyInjectionApp/DependencyInjectionApp.csproj
index 04691e82ed..7930c4a822 100644
--- a/test/TestSites/DependencyInjectionApp/DependencyInjectionApp.csproj
+++ b/test/TestSites/DependencyInjectionApp/DependencyInjectionApp.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
diff --git a/test/TestSites/StartRequestDelegateUrlApp/StartRequestDelegateUrlApp.csproj b/test/TestSites/StartRequestDelegateUrlApp/StartRequestDelegateUrlApp.csproj
index 0c089dbc33..7930c4a822 100644
--- a/test/TestSites/StartRequestDelegateUrlApp/StartRequestDelegateUrlApp.csproj
+++ b/test/TestSites/StartRequestDelegateUrlApp/StartRequestDelegateUrlApp.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
@@ -9,4 +9,4 @@
     <ProjectReference Include="..\..\..\src\Microsoft.AspNetCore\Microsoft.AspNetCore.csproj" />
   </ItemGroup>
 
-</Project>
\ No newline at end of file
+</Project>
diff --git a/test/TestSites/StartRouteBuilderUrlApp/StartRouteBuilderUrlApp.csproj b/test/TestSites/StartRouteBuilderUrlApp/StartRouteBuilderUrlApp.csproj
index 0c089dbc33..7930c4a822 100644
--- a/test/TestSites/StartRouteBuilderUrlApp/StartRouteBuilderUrlApp.csproj
+++ b/test/TestSites/StartRouteBuilderUrlApp/StartRouteBuilderUrlApp.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
@@ -9,4 +9,4 @@
     <ProjectReference Include="..\..\..\src\Microsoft.AspNetCore\Microsoft.AspNetCore.csproj" />
   </ItemGroup>
 
-</Project>
\ No newline at end of file
+</Project>
diff --git a/test/TestSites/StartWithIApplicationBuilderUrlApp/StartWithIApplicationBuilderUrlApp.csproj b/test/TestSites/StartWithIApplicationBuilderUrlApp/StartWithIApplicationBuilderUrlApp.csproj
index 0c089dbc33..7930c4a822 100644
--- a/test/TestSites/StartWithIApplicationBuilderUrlApp/StartWithIApplicationBuilderUrlApp.csproj
+++ b/test/TestSites/StartWithIApplicationBuilderUrlApp/StartWithIApplicationBuilderUrlApp.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
@@ -9,4 +9,4 @@
     <ProjectReference Include="..\..\..\src\Microsoft.AspNetCore\Microsoft.AspNetCore.csproj" />
   </ItemGroup>
 
-</Project>
\ No newline at end of file
+</Project>