diff --git a/build/dependencies.props b/build/dependencies.props
index a3c842b01e..d86c59afcd 100644
--- a/build/dependencies.props
+++ b/build/dependencies.props
@@ -3,23 +3,23 @@
     <MSBuildAllProjects>$(MSBuildAllProjects);$(MSBuildThisFileFullPath)</MSBuildAllProjects>
   </PropertyGroup>
   <PropertyGroup Label="Package Versions">
-    <InternalAspNetCoreSdkPackageVersion>2.1.0-preview3-17001</InternalAspNetCoreSdkPackageVersion>
-    <MicrosoftAspNetCoreTestingPackageVersion>2.1.0-preview3-32037</MicrosoftAspNetCoreTestingPackageVersion>
-    <MicrosoftExtensionsActivatorUtilitiesSourcesPackageVersion>2.1.0-preview3-32037</MicrosoftExtensionsActivatorUtilitiesSourcesPackageVersion>
-    <MicrosoftExtensionsCopyOnWriteDictionarySourcesPackageVersion>2.1.0-preview3-32037</MicrosoftExtensionsCopyOnWriteDictionarySourcesPackageVersion>
-    <MicrosoftExtensionsDependencyInjectionPackageVersion>2.1.0-preview3-32037</MicrosoftExtensionsDependencyInjectionPackageVersion>
-    <MicrosoftExtensionsFileProvidersAbstractionsPackageVersion>2.1.0-preview3-32037</MicrosoftExtensionsFileProvidersAbstractionsPackageVersion>
-    <MicrosoftExtensionsLoggingAbstractionsPackageVersion>2.1.0-preview3-32037</MicrosoftExtensionsLoggingAbstractionsPackageVersion>
-    <MicrosoftExtensionsObjectPoolPackageVersion>2.1.0-preview3-32037</MicrosoftExtensionsObjectPoolPackageVersion>
-    <MicrosoftExtensionsOptionsPackageVersion>2.1.0-preview3-32037</MicrosoftExtensionsOptionsPackageVersion>
-    <MicrosoftExtensionsPrimitivesPackageVersion>2.1.0-preview3-32037</MicrosoftExtensionsPrimitivesPackageVersion>
-    <MicrosoftExtensionsWebEncodersSourcesPackageVersion>2.1.0-preview3-32037</MicrosoftExtensionsWebEncodersSourcesPackageVersion>
+    <InternalAspNetCoreSdkPackageVersion>2.1.0-preview3-17002</InternalAspNetCoreSdkPackageVersion>
+    <MicrosoftAspNetCoreTestingPackageVersion>2.1.0-preview3-32110</MicrosoftAspNetCoreTestingPackageVersion>
+    <MicrosoftExtensionsActivatorUtilitiesSourcesPackageVersion>2.1.0-preview3-32110</MicrosoftExtensionsActivatorUtilitiesSourcesPackageVersion>
+    <MicrosoftExtensionsCopyOnWriteDictionarySourcesPackageVersion>2.1.0-preview3-32110</MicrosoftExtensionsCopyOnWriteDictionarySourcesPackageVersion>
+    <MicrosoftExtensionsDependencyInjectionPackageVersion>2.1.0-preview3-32110</MicrosoftExtensionsDependencyInjectionPackageVersion>
+    <MicrosoftExtensionsFileProvidersAbstractionsPackageVersion>2.1.0-preview3-32110</MicrosoftExtensionsFileProvidersAbstractionsPackageVersion>
+    <MicrosoftExtensionsLoggingAbstractionsPackageVersion>2.1.0-preview3-32110</MicrosoftExtensionsLoggingAbstractionsPackageVersion>
+    <MicrosoftExtensionsObjectPoolPackageVersion>2.1.0-preview3-32110</MicrosoftExtensionsObjectPoolPackageVersion>
+    <MicrosoftExtensionsOptionsPackageVersion>2.1.0-preview3-32110</MicrosoftExtensionsOptionsPackageVersion>
+    <MicrosoftExtensionsPrimitivesPackageVersion>2.1.0-preview3-32110</MicrosoftExtensionsPrimitivesPackageVersion>
+    <MicrosoftExtensionsWebEncodersSourcesPackageVersion>2.1.0-preview3-32110</MicrosoftExtensionsWebEncodersSourcesPackageVersion>
     <MicrosoftNETCoreApp20PackageVersion>2.0.0</MicrosoftNETCoreApp20PackageVersion>
-    <MicrosoftNETCoreApp21PackageVersion>2.1.0-preview2-26314-02</MicrosoftNETCoreApp21PackageVersion>
+    <MicrosoftNETCoreApp21PackageVersion>2.1.0-preview3-26331-01</MicrosoftNETCoreApp21PackageVersion>
     <MicrosoftNETTestSdkPackageVersion>15.6.1</MicrosoftNETTestSdkPackageVersion>
     <MoqPackageVersion>4.7.49</MoqPackageVersion>
-    <SystemBuffersPackageVersion>4.5.0-preview2-26313-01</SystemBuffersPackageVersion>
-    <SystemTextEncodingsWebPackageVersion>4.5.0-preview2-26313-01</SystemTextEncodingsWebPackageVersion>
+    <SystemBuffersPackageVersion>4.5.0-preview3-26331-02</SystemBuffersPackageVersion>
+    <SystemTextEncodingsWebPackageVersion>4.5.0-preview3-26331-02</SystemTextEncodingsWebPackageVersion>
     <XunitAnalyzersPackageVersion>0.8.0</XunitAnalyzersPackageVersion>
     <XunitPackageVersion>2.3.1</XunitPackageVersion>
     <XunitRunnerVisualStudioPackageVersion>2.4.0-beta.1.build3945</XunitRunnerVisualStudioPackageVersion>
diff --git a/korebuild-lock.txt b/korebuild-lock.txt
index 3a326c7d58..b3af0b8bce 100644
--- a/korebuild-lock.txt
+++ b/korebuild-lock.txt
@@ -1,2 +1,2 @@
-version:2.1.0-preview3-17001
-commithash:dda68c56abf0d3b911fe6a2315872c446b314585
+version:2.1.0-preview3-17002
+commithash:b8e4e6ab104adc94c0719bb74229870e9b584a7f