diff --git a/build/dependencies.props b/build/dependencies.props
index 89f628ce25..74e50cc8eb 100644
--- a/build/dependencies.props
+++ b/build/dependencies.props
@@ -3,18 +3,18 @@
     <MSBuildAllProjects>$(MSBuildAllProjects);$(MSBuildThisFileFullPath)</MSBuildAllProjects>
   </PropertyGroup>
   <PropertyGroup Label="Package Versions">
-    <InternalAspNetCoreSdkPackageVersion>2.1.0-preview3-17002</InternalAspNetCoreSdkPackageVersion>
-    <MicrosoftAspNetCoreAuthenticationCorePackageVersion>2.1.0-preview3-32122</MicrosoftAspNetCoreAuthenticationCorePackageVersion>
-    <MicrosoftAspNetCoreHostingPackageVersion>2.1.0-preview3-32122</MicrosoftAspNetCoreHostingPackageVersion>
-    <MicrosoftAspNetCoreTestingPackageVersion>2.1.0-preview3-32122</MicrosoftAspNetCoreTestingPackageVersion>
-    <MicrosoftExtensionsLoggingConsolePackageVersion>2.1.0-preview3-32122</MicrosoftExtensionsLoggingConsolePackageVersion>
+    <InternalAspNetCoreSdkPackageVersion>2.1.0-preview3-17018</InternalAspNetCoreSdkPackageVersion>
+    <MicrosoftAspNetCoreAuthenticationCorePackageVersion>2.1.0-preview3-32233</MicrosoftAspNetCoreAuthenticationCorePackageVersion>
+    <MicrosoftAspNetCoreHostingPackageVersion>2.1.0-preview3-32233</MicrosoftAspNetCoreHostingPackageVersion>
+    <MicrosoftAspNetCoreTestingPackageVersion>2.1.0-preview3-32233</MicrosoftAspNetCoreTestingPackageVersion>
+    <MicrosoftExtensionsLoggingConsolePackageVersion>2.1.0-preview3-32233</MicrosoftExtensionsLoggingConsolePackageVersion>
     <MicrosoftNETCoreApp20PackageVersion>2.0.0</MicrosoftNETCoreApp20PackageVersion>
-    <MicrosoftNETCoreApp21PackageVersion>2.1.0-preview2-26403-06</MicrosoftNETCoreApp21PackageVersion>
-    <MicrosoftNetHttpHeadersPackageVersion>2.1.0-preview3-32122</MicrosoftNetHttpHeadersPackageVersion>
+    <MicrosoftNETCoreApp21PackageVersion>2.1.0-preview3-26413-05</MicrosoftNETCoreApp21PackageVersion>
+    <MicrosoftNetHttpHeadersPackageVersion>2.1.0-preview3-32233</MicrosoftNetHttpHeadersPackageVersion>
     <MicrosoftNETTestSdkPackageVersion>15.6.1</MicrosoftNETTestSdkPackageVersion>
-    <MicrosoftWin32RegistryPackageVersion>4.5.0-preview2-26403-05</MicrosoftWin32RegistryPackageVersion>
-    <SystemNetHttpWinHttpHandlerPackageVersion>4.5.0-preview2-26403-05</SystemNetHttpWinHttpHandlerPackageVersion>
-    <SystemSecurityPrincipalWindowsPackageVersion>4.5.0-preview2-26403-05</SystemSecurityPrincipalWindowsPackageVersion>
+    <MicrosoftWin32RegistryPackageVersion>4.5.0-preview3-26413-02</MicrosoftWin32RegistryPackageVersion>
+    <SystemNetHttpWinHttpHandlerPackageVersion>4.5.0-preview3-26413-02</SystemNetHttpWinHttpHandlerPackageVersion>
+    <SystemSecurityPrincipalWindowsPackageVersion>4.5.0-preview3-26413-02</SystemSecurityPrincipalWindowsPackageVersion>
     <XunitPackageVersion>2.3.1</XunitPackageVersion>
     <XunitRunnerVisualStudioPackageVersion>2.4.0-beta.1.build3945</XunitRunnerVisualStudioPackageVersion>
   </PropertyGroup>
diff --git a/korebuild-lock.txt b/korebuild-lock.txt
index b3af0b8bce..b419d767b9 100644
--- a/korebuild-lock.txt
+++ b/korebuild-lock.txt
@@ -1,2 +1,2 @@
-version:2.1.0-preview3-17002
-commithash:b8e4e6ab104adc94c0719bb74229870e9b584a7f
+version:2.1.0-preview3-17018
+commithash:af264ca131f212b5ba8aafbc5110fc0fc510a2be