diff --git a/build/dependencies.props b/build/dependencies.props
index 72a243a247..a53358898b 100644
--- a/build/dependencies.props
+++ b/build/dependencies.props
@@ -1,44 +1,44 @@
-<Project>
+<Project>
   <PropertyGroup>
     <MSBuildAllProjects>$(MSBuildAllProjects);$(MSBuildThisFileFullPath)</MSBuildAllProjects>
   </PropertyGroup>
   <PropertyGroup Label="Package Versions">
-    <InternalAspNetCoreSdkPackageVersion>2.1.0-preview1-15576</InternalAspNetCoreSdkPackageVersion>
+    <InternalAspNetCoreSdkPackageVersion>2.1.0-preview1-15618</InternalAspNetCoreSdkPackageVersion>
     <MicrosoftApplicationInsightsAspNetCorePackageVersion>2.1.1</MicrosoftApplicationInsightsAspNetCorePackageVersion>
-     <MicrosoftAspNetCoreAspNetCoreModulePackageVersion>1.0.0-pre-10223</MicrosoftAspNetCoreAspNetCoreModulePackageVersion>
-    <MicrosoftAspNetCoreDataProtectionAzureKeyVaultPackageVersion>2.1.0-preview1-27644</MicrosoftAspNetCoreDataProtectionAzureKeyVaultPackageVersion>
-    <MicrosoftAspNetCoreHostingAbstractionsPackageVersion>2.1.0-preview1-27644</MicrosoftAspNetCoreHostingAbstractionsPackageVersion>
-    <MicrosoftAspNetCoreHostingPackageVersion>2.1.0-preview1-27644</MicrosoftAspNetCoreHostingPackageVersion>
-    <MicrosoftAspNetCoreIdentityServiceAzureKeyVaultPackageVersion>2.1.0-preview1-27644</MicrosoftAspNetCoreIdentityServiceAzureKeyVaultPackageVersion>
-    <MicrosoftAspNetCoreMvcPackageVersion>2.1.0-preview1-27644</MicrosoftAspNetCoreMvcPackageVersion>
-    <MicrosoftAspNetCoreRazorRuntimePackageVersion>2.1.0-preview1-27644</MicrosoftAspNetCoreRazorRuntimePackageVersion>
-    <MicrosoftAspNetCoreServerIISIntegrationPackageVersion>2.1.0-preview1-27644</MicrosoftAspNetCoreServerIISIntegrationPackageVersion>
-    <MicrosoftAspNetCoreServerIntegrationTestingPackageVersion>0.5.0-preview1-27644</MicrosoftAspNetCoreServerIntegrationTestingPackageVersion>
-    <MicrosoftAspNetCoreServerKestrelPackageVersion>2.1.0-preview1-27644</MicrosoftAspNetCoreServerKestrelPackageVersion>
-    <MicrosoftAspNetCoreTestHostPackageVersion>2.1.0-preview1-27644</MicrosoftAspNetCoreTestHostPackageVersion>
+    <MicrosoftAspNetCoreAspNetCoreModulePackageVersion>1.0.0-pre-10223</MicrosoftAspNetCoreAspNetCoreModulePackageVersion>
+    <MicrosoftAspNetCoreDataProtectionAzureKeyVaultPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreDataProtectionAzureKeyVaultPackageVersion>
+    <MicrosoftAspNetCoreHostingAbstractionsPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreHostingAbstractionsPackageVersion>
+    <MicrosoftAspNetCoreHostingPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreHostingPackageVersion>
+    <MicrosoftAspNetCoreIdentityServiceAzureKeyVaultPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreIdentityServiceAzureKeyVaultPackageVersion>
+    <MicrosoftAspNetCoreMvcPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreMvcPackageVersion>
+    <MicrosoftAspNetCoreRazorRuntimePackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreRazorRuntimePackageVersion>
+    <MicrosoftAspNetCoreServerIISIntegrationPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreServerIISIntegrationPackageVersion>
+    <MicrosoftAspNetCoreServerIntegrationTestingPackageVersion>0.5.0-preview1-27773</MicrosoftAspNetCoreServerIntegrationTestingPackageVersion>
+    <MicrosoftAspNetCoreServerKestrelPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreServerKestrelPackageVersion>
+    <MicrosoftAspNetCoreTestHostPackageVersion>2.1.0-preview1-27773</MicrosoftAspNetCoreTestHostPackageVersion>
     <MicrosoftAzureManagementFluentPackageVersion>1.1.3</MicrosoftAzureManagementFluentPackageVersion>
     <MicrosoftAzureServicesAppAuthenticationPackageVersion>1.0.0-preview</MicrosoftAzureServicesAppAuthenticationPackageVersion>
-    <MicrosoftExtensionsConfigurationAzureKeyVaultPackageVersion>2.1.0-preview1-27644</MicrosoftExtensionsConfigurationAzureKeyVaultPackageVersion>
-    <MicrosoftExtensionsConfigurationCommandLinePackageVersion>2.1.0-preview1-27644</MicrosoftExtensionsConfigurationCommandLinePackageVersion>
-    <MicrosoftExtensionsConfigurationEnvironmentVariablesPackageVersion>2.1.0-preview1-27644</MicrosoftExtensionsConfigurationEnvironmentVariablesPackageVersion>
-    <MicrosoftExtensionsConfigurationJsonPackageVersion>2.1.0-preview1-27644</MicrosoftExtensionsConfigurationJsonPackageVersion>
-    <MicrosoftExtensionsDiagnosticAdapterPackageVersion>2.1.0-preview1-27644</MicrosoftExtensionsDiagnosticAdapterPackageVersion>
-    <MicrosoftExtensionsLoggingAzureAppServicesPackageVersion>2.1.0-preview1-27644</MicrosoftExtensionsLoggingAzureAppServicesPackageVersion>
-    <MicrosoftExtensionsLoggingConfigurationPackageVersion>2.1.0-preview1-27644</MicrosoftExtensionsLoggingConfigurationPackageVersion>
-    <MicrosoftExtensionsLoggingConsolePackageVersion>2.1.0-preview1-27644</MicrosoftExtensionsLoggingConsolePackageVersion>
-    <MicrosoftExtensionsLoggingPackageVersion>2.1.0-preview1-27644</MicrosoftExtensionsLoggingPackageVersion>
-    <MicrosoftExtensionsLoggingTestingPackageVersion>2.1.0-preview1-27644</MicrosoftExtensionsLoggingTestingPackageVersion>
-    <MicrosoftExtensionsProcessSourcesPackageVersion>2.1.0-preview1-27644</MicrosoftExtensionsProcessSourcesPackageVersion>
+    <MicrosoftExtensionsConfigurationAzureKeyVaultPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsConfigurationAzureKeyVaultPackageVersion>
+    <MicrosoftExtensionsConfigurationCommandLinePackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsConfigurationCommandLinePackageVersion>
+    <MicrosoftExtensionsConfigurationEnvironmentVariablesPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsConfigurationEnvironmentVariablesPackageVersion>
+    <MicrosoftExtensionsConfigurationJsonPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsConfigurationJsonPackageVersion>
+    <MicrosoftExtensionsDiagnosticAdapterPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsDiagnosticAdapterPackageVersion>
+    <MicrosoftExtensionsLoggingAzureAppServicesPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsLoggingAzureAppServicesPackageVersion>
+    <MicrosoftExtensionsLoggingConfigurationPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsLoggingConfigurationPackageVersion>
+    <MicrosoftExtensionsLoggingConsolePackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsLoggingConsolePackageVersion>
+    <MicrosoftExtensionsLoggingPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsLoggingPackageVersion>
+    <MicrosoftExtensionsLoggingTestingPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsLoggingTestingPackageVersion>
+    <MicrosoftExtensionsProcessSourcesPackageVersion>2.1.0-preview1-27773</MicrosoftExtensionsProcessSourcesPackageVersion>
     <MicrosoftNETCoreApp20PackageVersion>2.0.0</MicrosoftNETCoreApp20PackageVersion>
-    <MicrosoftNETCoreApp21PackageVersion>2.1.0-preview1-25907-02</MicrosoftNETCoreApp21PackageVersion>
+    <MicrosoftNETCoreApp21PackageVersion>2.1.0-preview1-25915-01</MicrosoftNETCoreApp21PackageVersion>
     <MicrosoftNETTestSdkPackageVersion>15.3.0</MicrosoftNETTestSdkPackageVersion>
     <MicrosoftWebXdtPackageVersion>1.4.0</MicrosoftWebXdtPackageVersion>
     <MoqPackageVersion>4.7.49</MoqPackageVersion>
     <NewtonsoftJsonPackageVersion>10.0.1</NewtonsoftJsonPackageVersion>
-    <SystemReflectionMetadataPackageVersion>1.5.0</SystemReflectionMetadataPackageVersion>
+    <SystemReflectionMetadataPackageVersion>1.6.0-preview1-25914-04</SystemReflectionMetadataPackageVersion>
     <WindowsAzureStoragePackageVersion>8.1.4</WindowsAzureStoragePackageVersion>
-    <XunitPackageVersion>2.3.0</XunitPackageVersion>
-    <XunitRunnerVisualStudioPackageVersion>2.3.0</XunitRunnerVisualStudioPackageVersion>
+    <XunitPackageVersion>2.3.1</XunitPackageVersion>
+    <XunitRunnerVisualStudioPackageVersion>2.3.1</XunitRunnerVisualStudioPackageVersion>
   </PropertyGroup>
   <Import Project="$(DotNetPackageVersionPropsPath)" Condition=" '$(DotNetPackageVersionPropsPath)' != '' " />
 </Project>
diff --git a/korebuild-lock.txt b/korebuild-lock.txt
index 1a99066b7c..e7cce93009 100644
--- a/korebuild-lock.txt
+++ b/korebuild-lock.txt
@@ -1,2 +1,2 @@
-version:2.1.0-preview1-15576
-commithash:2f3856d2ba4f659fcb9253215b83946a06794a27
+version:2.1.0-preview1-15618
+commithash:00ce1383114015fe89b221146036e59e6bc11219