diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index c50ca5c402d..65952d1713c 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -43,9 +43,9 @@
       <Uri>https://github.com/dotnet/xharness</Uri>
       <Sha>9eaf2814afcd7627059e5ea0ee2f5169a6409689</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Net.Compilers.Toolset" Version="4.0.0-6.21515.3">
+    <Dependency Name="Microsoft.Net.Compilers.Toolset" Version="4.0.0-6.21521.3">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>95b7a0198f8c805b367f17e4639020ec21c16705</Sha>
+      <Sha>5b791f87f5a902491625f28e36ae66986c631f50</Sha>
     </Dependency>
     <Dependency Name="Microsoft.NET.ILLink.Tasks" Version="6.0.100-1.21519.4">
       <Uri>https://github.com/dotnet/linker</Uri>
diff --git a/eng/Versions.props b/eng/Versions.props
index 81f9a96e676..087c8dd4279 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -36,7 +36,7 @@
     <MicrosoftExtensionsFileSystemGlobbingVersion>2.0.0</MicrosoftExtensionsFileSystemGlobbingVersion>
     <MicrosoftExtensionsLoggingConsoleVersion>2.1.1</MicrosoftExtensionsLoggingConsoleVersion>
     <MicrosoftNETCorePlatformsVersion>2.1.0</MicrosoftNETCorePlatformsVersion>
-    <MicrosoftNetCompilersToolsetVersion>4.0.0-6.21515.3</MicrosoftNetCompilersToolsetVersion>
+    <MicrosoftNetCompilersToolsetVersion>4.0.0-6.21521.3</MicrosoftNetCompilersToolsetVersion>
     <MicrosoftNetTestSdkVersion>16.7.1</MicrosoftNetTestSdkVersion>
     <MicrosoftNETILLinkTasksVersion>6.0.100-1.21519.4</MicrosoftNETILLinkTasksVersion>
     <MoqVersion>4.8.3</MoqVersion>