diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index f31225b98..e5dab589e 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -42,9 +42,9 @@
       <Uri>https://github.com/dotnet/templating</Uri>
       <Sha>6d694be84d6e88ffa4d611cc4e22058cf9359255</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Dotnet.Toolset.Internal" Version="3.0.100-preview6.19276.2">
+    <Dependency Name="Microsoft.Dotnet.Toolset.Internal" Version="3.0.100-preview6.19278.1">
       <Uri>https://github.com/dotnet/toolset</Uri>
-      <Sha>50f2b3ea9acfb777cecde1b273b1648ef72841fd</Sha>
+      <Sha>b4a8940c3fc9e0770e157b9743707d6c4485b745</Sha>
     </Dependency>
     <Dependency Name="NETStandard.Library" Version="2.1.0-prerelease.19274.2">
       <Uri>https://github.com/dotnet/standard</Uri>
diff --git a/eng/Versions.props b/eng/Versions.props
index f1e80da47..6004d2796 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -12,7 +12,7 @@
     <PreReleaseVersionLabel>preview</PreReleaseVersionLabel>
   </PropertyGroup>
   <PropertyGroup>
-    <MicrosoftDotnetToolsetInternalPackageVersion>3.0.100-preview6.19276.2</MicrosoftDotnetToolsetInternalPackageVersion>
+    <MicrosoftDotnetToolsetInternalPackageVersion>3.0.100-preview6.19278.1</MicrosoftDotnetToolsetInternalPackageVersion>
   </PropertyGroup>
   <PropertyGroup>
     <!-- Dependency from https://github.com/dotnet/winforms -->