diff --git a/build/dependencies.props b/build/dependencies.props
index 733aa4e2ad..d056c7ea84 100644
--- a/build/dependencies.props
+++ b/build/dependencies.props
@@ -3,63 +3,63 @@
     <MSBuildAllProjects>$(MSBuildAllProjects);$(MSBuildThisFileFullPath)</MSBuildAllProjects>
   </PropertyGroup>
   <PropertyGroup Label="Package Versions">
-    <InternalAspNetCoreSdkPackageVersion>2.1.0-preview1-15618</InternalAspNetCoreSdkPackageVersion>
-    <MicrosoftAspNetCoreAuthenticationCookiesPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreAuthenticationCookiesPackageVersion>
-    <MicrosoftAspNetCoreAuthenticationFacebookPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreAuthenticationFacebookPackageVersion>
-    <MicrosoftAspNetCoreAuthenticationGooglePackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreAuthenticationGooglePackageVersion>
-    <MicrosoftAspNetCoreAuthenticationOpenIdConnectPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreAuthenticationOpenIdConnectPackageVersion>
-    <MicrosoftAspNetCoreAuthenticationTwitterPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreAuthenticationTwitterPackageVersion>
-    <MicrosoftAspNetCoreAuthorizationPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreAuthorizationPackageVersion>
-    <MicrosoftAspNetCoreCertificatesConfigurationSourcesPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreCertificatesConfigurationSourcesPackageVersion>
-    <MicrosoftAspNetCoreCryptographyKeyDerivationPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreCryptographyKeyDerivationPackageVersion>
-    <MicrosoftAspNetCoreDataProtectionExtensionsPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreDataProtectionExtensionsPackageVersion>
-    <MicrosoftAspNetCoreDiagnosticsEntityFrameworkCorePackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreDiagnosticsEntityFrameworkCorePackageVersion>
-    <MicrosoftAspNetCoreDiagnosticsPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreDiagnosticsPackageVersion>
-    <MicrosoftAspNetCoreHostingAbstractionsPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreHostingAbstractionsPackageVersion>
-    <MicrosoftAspNetCoreHostingPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreHostingPackageVersion>
-    <MicrosoftAspNetCoreHttpAbstractionsPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreHttpAbstractionsPackageVersion>
-    <MicrosoftAspNetCoreHttpPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreHttpPackageVersion>
-    <MicrosoftAspNetCoreMvcPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreMvcPackageVersion>
-    <MicrosoftAspNetCoreMvcTestingPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreMvcTestingPackageVersion>
-    <MicrosoftAspNetCoreRewritePackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreRewritePackageVersion>
-    <MicrosoftAspNetCoreServerIISIntegrationPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreServerIISIntegrationPackageVersion>
-    <MicrosoftAspNetCoreServerKestrelHttpsPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreServerKestrelHttpsPackageVersion>
-    <MicrosoftAspNetCoreServerKestrelPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreServerKestrelPackageVersion>
-    <MicrosoftAspNetCoreStaticFilesPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreStaticFilesPackageVersion>
-    <MicrosoftAspNetCoreTestHostPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreTestHostPackageVersion>
-    <MicrosoftAspNetCoreTestingPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreTestingPackageVersion>
+    <InternalAspNetCoreSdkPackageVersion>2.1.0-preview1-15626</InternalAspNetCoreSdkPackageVersion>
+    <MicrosoftAspNetCoreAuthenticationCookiesPackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreAuthenticationCookiesPackageVersion>
+    <MicrosoftAspNetCoreAuthenticationFacebookPackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreAuthenticationFacebookPackageVersion>
+    <MicrosoftAspNetCoreAuthenticationGooglePackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreAuthenticationGooglePackageVersion>
+    <MicrosoftAspNetCoreAuthenticationOpenIdConnectPackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreAuthenticationOpenIdConnectPackageVersion>
+    <MicrosoftAspNetCoreAuthenticationTwitterPackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreAuthenticationTwitterPackageVersion>
+    <MicrosoftAspNetCoreAuthorizationPackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreAuthorizationPackageVersion>
+    <MicrosoftAspNetCoreCertificatesConfigurationSourcesPackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreCertificatesConfigurationSourcesPackageVersion>
+    <MicrosoftAspNetCoreCryptographyKeyDerivationPackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreCryptographyKeyDerivationPackageVersion>
+    <MicrosoftAspNetCoreDataProtectionExtensionsPackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreDataProtectionExtensionsPackageVersion>
+    <MicrosoftAspNetCoreDiagnosticsEntityFrameworkCorePackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreDiagnosticsEntityFrameworkCorePackageVersion>
+    <MicrosoftAspNetCoreDiagnosticsPackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreDiagnosticsPackageVersion>
+    <MicrosoftAspNetCoreHostingAbstractionsPackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreHostingAbstractionsPackageVersion>
+    <MicrosoftAspNetCoreHostingPackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreHostingPackageVersion>
+    <MicrosoftAspNetCoreHttpAbstractionsPackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreHttpAbstractionsPackageVersion>
+    <MicrosoftAspNetCoreHttpPackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreHttpPackageVersion>
+    <MicrosoftAspNetCoreMvcPackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreMvcPackageVersion>
+    <MicrosoftAspNetCoreMvcTestingPackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreMvcTestingPackageVersion>
+    <MicrosoftAspNetCoreRewritePackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreRewritePackageVersion>
+    <MicrosoftAspNetCoreServerIISIntegrationPackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreServerIISIntegrationPackageVersion>
+    <MicrosoftAspNetCoreServerKestrelHttpsPackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreServerKestrelHttpsPackageVersion>
+    <MicrosoftAspNetCoreServerKestrelPackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreServerKestrelPackageVersion>
+    <MicrosoftAspNetCoreStaticFilesPackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreStaticFilesPackageVersion>
+    <MicrosoftAspNetCoreTestHostPackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreTestHostPackageVersion>
+    <MicrosoftAspNetCoreTestingPackageVersion>2.1.0-preview1-27807</MicrosoftAspNetCoreTestingPackageVersion>
     <MicrosoftAspNetIdentityEntityFrameworkPackageVersion>2.2.1</MicrosoftAspNetIdentityEntityFrameworkPackageVersion>
     <MicrosoftAzureKeyVaultPackageVersion>2.3.2</MicrosoftAzureKeyVaultPackageVersion>
-    <MicrosoftEntityFrameworkCoreInMemoryPackageVersion>2.1.0-preview1-27773</MicrosoftEntityFrameworkCoreInMemoryPackageVersion>
-    <MicrosoftEntityFrameworkCoreRelationalPackageVersion>2.1.0-preview1-27773</MicrosoftEntityFrameworkCoreRelationalPackageVersion>
-    <MicrosoftEntityFrameworkCoreSqlServerPackageVersion>2.1.0-preview1-27773</MicrosoftEntityFrameworkCoreSqlServerPackageVersion>
-    <MicrosoftEntityFrameworkCoreToolsPackageVersion>2.1.0-preview1-27773</MicrosoftEntityFrameworkCoreToolsPackageVersion>
-    <MicrosoftExtensionsConfigurationBinderPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsConfigurationBinderPackageVersion>
-    <MicrosoftExtensionsConfigurationCommandLinePackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsConfigurationCommandLinePackageVersion>
-    <MicrosoftExtensionsConfigurationEnvironmentVariablesPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsConfigurationEnvironmentVariablesPackageVersion>
-    <MicrosoftExtensionsConfigurationFileExtensionsPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsConfigurationFileExtensionsPackageVersion>
-    <MicrosoftExtensionsConfigurationJsonPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsConfigurationJsonPackageVersion>
-    <MicrosoftExtensionsConfigurationPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsConfigurationPackageVersion>
-    <MicrosoftExtensionsConfigurationUserSecretsPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsConfigurationUserSecretsPackageVersion>
-    <MicrosoftExtensionsDependencyInjectionPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsDependencyInjectionPackageVersion>
-    <MicrosoftExtensionsLoggingConfigurationPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsLoggingConfigurationPackageVersion>
-    <MicrosoftExtensionsLoggingConsolePackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsLoggingConsolePackageVersion>
-    <MicrosoftExtensionsLoggingDebugPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsLoggingDebugPackageVersion>
-    <MicrosoftExtensionsLoggingPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsLoggingPackageVersion>
-    <MicrosoftExtensionsLoggingTestingPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsLoggingTestingPackageVersion>
-    <MicrosoftExtensionsOptionsConfigurationExtensionsPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsOptionsConfigurationExtensionsPackageVersion>
-    <MicrosoftExtensionsOptionsPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsOptionsPackageVersion>
-    <MicrosoftExtensionsRazorViewsSourcesPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsRazorViewsSourcesPackageVersion>
-    <MicrosoftExtensionsSecurityHelperSourcesPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsSecurityHelperSourcesPackageVersion>
+    <MicrosoftEntityFrameworkCoreInMemoryPackageVersion>2.1.0-preview1-27807</MicrosoftEntityFrameworkCoreInMemoryPackageVersion>
+    <MicrosoftEntityFrameworkCoreRelationalPackageVersion>2.1.0-preview1-27807</MicrosoftEntityFrameworkCoreRelationalPackageVersion>
+    <MicrosoftEntityFrameworkCoreSqlServerPackageVersion>2.1.0-preview1-27807</MicrosoftEntityFrameworkCoreSqlServerPackageVersion>
+    <MicrosoftEntityFrameworkCoreToolsPackageVersion>2.1.0-preview1-27807</MicrosoftEntityFrameworkCoreToolsPackageVersion>
+    <MicrosoftExtensionsConfigurationBinderPackageVersion>2.1.0-preview1-27807</MicrosoftExtensionsConfigurationBinderPackageVersion>
+    <MicrosoftExtensionsConfigurationCommandLinePackageVersion>2.1.0-preview1-27807</MicrosoftExtensionsConfigurationCommandLinePackageVersion>
+    <MicrosoftExtensionsConfigurationEnvironmentVariablesPackageVersion>2.1.0-preview1-27807</MicrosoftExtensionsConfigurationEnvironmentVariablesPackageVersion>
+    <MicrosoftExtensionsConfigurationFileExtensionsPackageVersion>2.1.0-preview1-27807</MicrosoftExtensionsConfigurationFileExtensionsPackageVersion>
+    <MicrosoftExtensionsConfigurationJsonPackageVersion>2.1.0-preview1-27807</MicrosoftExtensionsConfigurationJsonPackageVersion>
+    <MicrosoftExtensionsConfigurationPackageVersion>2.1.0-preview1-27807</MicrosoftExtensionsConfigurationPackageVersion>
+    <MicrosoftExtensionsConfigurationUserSecretsPackageVersion>2.1.0-preview1-27807</MicrosoftExtensionsConfigurationUserSecretsPackageVersion>
+    <MicrosoftExtensionsDependencyInjectionPackageVersion>2.1.0-preview1-27807</MicrosoftExtensionsDependencyInjectionPackageVersion>
+    <MicrosoftExtensionsLoggingConfigurationPackageVersion>2.1.0-preview1-27807</MicrosoftExtensionsLoggingConfigurationPackageVersion>
+    <MicrosoftExtensionsLoggingConsolePackageVersion>2.1.0-preview1-27807</MicrosoftExtensionsLoggingConsolePackageVersion>
+    <MicrosoftExtensionsLoggingDebugPackageVersion>2.1.0-preview1-27807</MicrosoftExtensionsLoggingDebugPackageVersion>
+    <MicrosoftExtensionsLoggingPackageVersion>2.1.0-preview1-27807</MicrosoftExtensionsLoggingPackageVersion>
+    <MicrosoftExtensionsLoggingTestingPackageVersion>2.1.0-preview1-27807</MicrosoftExtensionsLoggingTestingPackageVersion>
+    <MicrosoftExtensionsOptionsConfigurationExtensionsPackageVersion>2.1.0-preview1-27807</MicrosoftExtensionsOptionsConfigurationExtensionsPackageVersion>
+    <MicrosoftExtensionsOptionsPackageVersion>2.1.0-preview1-27807</MicrosoftExtensionsOptionsPackageVersion>
+    <MicrosoftExtensionsRazorViewsSourcesPackageVersion>2.1.0-preview1-27807</MicrosoftExtensionsRazorViewsSourcesPackageVersion>
+    <MicrosoftExtensionsSecurityHelperSourcesPackageVersion>2.1.0-preview1-27807</MicrosoftExtensionsSecurityHelperSourcesPackageVersion>
     <MicrosoftIdentityModelClientsActiveDirectoryPackageVersion>3.14.1</MicrosoftIdentityModelClientsActiveDirectoryPackageVersion>
     <MicrosoftIdentityModelProtocolsOpenIdConnectPackageVersion>5.2.0-preview2-41113220915</MicrosoftIdentityModelProtocolsOpenIdConnectPackageVersion>
     <MicrosoftNETCoreApp20PackageVersion>2.0.0</MicrosoftNETCoreApp20PackageVersion>
-    <MicrosoftNETCoreApp21PackageVersion>2.1.0-preview1-25915-01</MicrosoftNETCoreApp21PackageVersion>
+    <MicrosoftNETCoreApp21PackageVersion>2.1.0-preview1-26008-01</MicrosoftNETCoreApp21PackageVersion>
     <MicrosoftNETTestSdkPackageVersion>15.3.0</MicrosoftNETTestSdkPackageVersion>
     <MicrosoftOwinSecurityCookiesPackageVersion>3.0.1</MicrosoftOwinSecurityCookiesPackageVersion>
-    <MicrosoftOwinSecurityInteropPackageVersion>2.1.0-preview1-27773</MicrosoftOwinSecurityInteropPackageVersion>
+    <MicrosoftOwinSecurityInteropPackageVersion>2.1.0-preview1-27807</MicrosoftOwinSecurityInteropPackageVersion>
     <MoqPackageVersion>4.7.49</MoqPackageVersion>
-    <SystemComponentModelAnnotationsPackageVersion>4.5.0-preview1-25914-04</SystemComponentModelAnnotationsPackageVersion>
+    <SystemComponentModelAnnotationsPackageVersion>4.5.0-preview1-26006-06</SystemComponentModelAnnotationsPackageVersion>
     <XunitAnalyzersPackageVersion>0.8.0</XunitAnalyzersPackageVersion>
     <XunitPackageVersion>2.3.1</XunitPackageVersion>
     <XunitRunnerVisualStudioPackageVersion>2.3.1</XunitRunnerVisualStudioPackageVersion>
diff --git a/korebuild-lock.txt b/korebuild-lock.txt
index e7cce93009..8d52a6128c 100644
--- a/korebuild-lock.txt
+++ b/korebuild-lock.txt
@@ -1,2 +1,2 @@
-version:2.1.0-preview1-15618
-commithash:00ce1383114015fe89b221146036e59e6bc11219
+version:2.1.0-preview1-15626
+commithash:fd6410e9c90c428bc01238372303ad09cb9ec889