diff --git a/build/dependencies.props b/build/dependencies.props
index ce0b3c16d3..9c92819964 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-preview2-15728</InternalAspNetCoreSdkPackageVersion>
-    <MicrosoftAspNetCoreAspNetCoreModulePackageVersion>2.1.0-preview2-30285</MicrosoftAspNetCoreAspNetCoreModulePackageVersion>
-    <MicrosoftAspNetCoreResponseCompressionPackageVersion>2.1.0-preview2-30285</MicrosoftAspNetCoreResponseCompressionPackageVersion>
-    <MicrosoftAspNetCoreServerHttpSysPackageVersion>2.1.0-preview2-30285</MicrosoftAspNetCoreServerHttpSysPackageVersion>
-    <MicrosoftAspNetCoreServerIISIntegrationPackageVersion>2.1.0-preview2-30285</MicrosoftAspNetCoreServerIISIntegrationPackageVersion>
-    <MicrosoftAspNetCoreServerIntegrationTestingPackageVersion>0.5.0-preview2-30285</MicrosoftAspNetCoreServerIntegrationTestingPackageVersion>
-    <MicrosoftAspNetCoreServerKestrelPackageVersion>2.1.0-preview2-30285</MicrosoftAspNetCoreServerKestrelPackageVersion>
-    <MicrosoftAspNetCoreWebUtilitiesPackageVersion>2.1.0-preview2-30285</MicrosoftAspNetCoreWebUtilitiesPackageVersion>
-    <MicrosoftExtensionsConfigurationCommandLinePackageVersion>2.1.0-preview2-30285</MicrosoftExtensionsConfigurationCommandLinePackageVersion>
-    <MicrosoftExtensionsConfigurationJsonPackageVersion>2.1.0-preview2-30285</MicrosoftExtensionsConfigurationJsonPackageVersion>
-    <MicrosoftExtensionsLoggingConsolePackageVersion>2.1.0-preview2-30285</MicrosoftExtensionsLoggingConsolePackageVersion>
-    <MicrosoftExtensionsLoggingPackageVersion>2.1.0-preview2-30285</MicrosoftExtensionsLoggingPackageVersion>
-    <MicrosoftExtensionsLoggingTestingPackageVersion>2.1.0-preview2-30285</MicrosoftExtensionsLoggingTestingPackageVersion>
+    <InternalAspNetCoreSdkPackageVersion>2.1.0-preview3-17001</InternalAspNetCoreSdkPackageVersion>
+    <MicrosoftAspNetCoreAspNetCoreModulePackageVersion>2.1.0-preview3-32037</MicrosoftAspNetCoreAspNetCoreModulePackageVersion>
+    <MicrosoftAspNetCoreResponseCompressionPackageVersion>2.1.0-preview3-32037</MicrosoftAspNetCoreResponseCompressionPackageVersion>
+    <MicrosoftAspNetCoreServerHttpSysPackageVersion>2.1.0-preview3-32037</MicrosoftAspNetCoreServerHttpSysPackageVersion>
+    <MicrosoftAspNetCoreServerIISIntegrationPackageVersion>2.1.0-preview3-32037</MicrosoftAspNetCoreServerIISIntegrationPackageVersion>
+    <MicrosoftAspNetCoreServerIntegrationTestingPackageVersion>0.5.0-preview2-32037</MicrosoftAspNetCoreServerIntegrationTestingPackageVersion>
+    <MicrosoftAspNetCoreServerKestrelPackageVersion>2.1.0-preview3-32037</MicrosoftAspNetCoreServerKestrelPackageVersion>
+    <MicrosoftAspNetCoreWebUtilitiesPackageVersion>2.1.0-preview3-32037</MicrosoftAspNetCoreWebUtilitiesPackageVersion>
+    <MicrosoftExtensionsConfigurationCommandLinePackageVersion>2.1.0-preview3-32037</MicrosoftExtensionsConfigurationCommandLinePackageVersion>
+    <MicrosoftExtensionsConfigurationJsonPackageVersion>2.1.0-preview3-32037</MicrosoftExtensionsConfigurationJsonPackageVersion>
+    <MicrosoftExtensionsLoggingConsolePackageVersion>2.1.0-preview3-32037</MicrosoftExtensionsLoggingConsolePackageVersion>
+    <MicrosoftExtensionsLoggingPackageVersion>2.1.0-preview3-32037</MicrosoftExtensionsLoggingPackageVersion>
+    <MicrosoftExtensionsLoggingTestingPackageVersion>2.1.0-preview3-32037</MicrosoftExtensionsLoggingTestingPackageVersion>
     <MicrosoftNETCoreApp20PackageVersion>2.0.0</MicrosoftNETCoreApp20PackageVersion>
-    <MicrosoftNETCoreApp21PackageVersion>2.1.0-preview2-26308-01</MicrosoftNETCoreApp21PackageVersion>
-    <MicrosoftNetHttpHeadersPackageVersion>2.1.0-preview2-30285</MicrosoftNetHttpHeadersPackageVersion>
-    <MicrosoftNETTestSdkPackageVersion>15.6.0</MicrosoftNETTestSdkPackageVersion>
+    <MicrosoftNETCoreApp21PackageVersion>2.1.0-preview2-26314-02</MicrosoftNETCoreApp21PackageVersion>
+    <MicrosoftNetHttpHeadersPackageVersion>2.1.0-preview3-32037</MicrosoftNetHttpHeadersPackageVersion>
+    <MicrosoftNETTestSdkPackageVersion>15.6.1</MicrosoftNETTestSdkPackageVersion>
     <SerilogExtensionsLoggingPackageVersion>1.4.0</SerilogExtensionsLoggingPackageVersion>
     <SerilogSinksFilePackageVersion>3.2.0</SerilogSinksFilePackageVersion>
     <XunitPackageVersion>2.3.1</XunitPackageVersion>
diff --git a/korebuild-lock.txt b/korebuild-lock.txt
index 138d848db1..3a326c7d58 100644
--- a/korebuild-lock.txt
+++ b/korebuild-lock.txt
@@ -1,2 +1,2 @@
-version:2.1.0-preview2-15728
-commithash:393377068ddcf51dfee0536536d455f57a828b06
+version:2.1.0-preview3-17001
+commithash:dda68c56abf0d3b911fe6a2315872c446b314585