diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index e4af87f1e..2dc30438a 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -42,9 +42,9 @@
       <Uri>https://github.com/dotnet/templating</Uri>
       <Sha>e8d6da33000a416b2b36b4f04b1756dcc99f671d</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Dotnet.Toolset.Internal" Version="3.0.100-rc1.19420.17">
+    <Dependency Name="Microsoft.Dotnet.Toolset.Internal" Version="3.0.100-rc1.19421.1">
       <Uri>https://github.com/dotnet/toolset</Uri>
-      <Sha>06a9ce20854c23a69ac207db32e27846dd812132</Sha>
+      <Sha>d376afac3871a8c7a448ccede4a8a7eec6cb68ad</Sha>
     </Dependency>
     <Dependency Name="Microsoft.NET.Sdk" Version="3.0.100-preview9.19413.5" CoherentParentDependency="Microsoft.Dotnet.Toolset.Internal">
       <Uri>https://github.com/dotnet/sdk</Uri>
diff --git a/eng/Versions.props b/eng/Versions.props
index d9d84925d..cf05b1f2a 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -12,7 +12,7 @@
     <PreReleaseVersionLabel>preview</PreReleaseVersionLabel>
   </PropertyGroup>
   <PropertyGroup>
-    <MicrosoftDotnetToolsetInternalPackageVersion>3.0.100-rc1.19420.17</MicrosoftDotnetToolsetInternalPackageVersion>
+    <MicrosoftDotnetToolsetInternalPackageVersion>3.0.100-rc1.19421.1</MicrosoftDotnetToolsetInternalPackageVersion>
   </PropertyGroup>
   <PropertyGroup>
     <!-- Dependency from https://github.com/dotnet/winforms -->