diff --git a/NuGet.config b/NuGet.config
index d30d1402844..129a1d964be 100644
--- a/NuGet.config
+++ b/NuGet.config
@@ -8,7 +8,7 @@
     <clear />
     <!--Begin: Package sources managed by Dependency Flow automation. Do not edit the sources below.-->
     <!--  Begin: Package sources from DotNet-msbuild-Trusted -->
-    <add key="darc-pub-DotNet-msbuild-Trusted-a4ef1e9" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-DotNet-msbuild-Trusted-a4ef1e90/nuget/v3/index.json" />
+    <add key="darc-pub-DotNet-msbuild-Trusted-0586a3f" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-DotNet-msbuild-Trusted-0586a3f9/nuget/v3/index.json" />
     <!--  End: Package sources from DotNet-msbuild-Trusted -->
     <!--End: Package sources managed by Dependency Flow automation. Do not edit the sources above.-->
     <add key="dotnet-eng" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json" />
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index d01cf73cceb..61e4ad5b07b 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -7,26 +7,26 @@
       <SourceBuild RepoName="source-build-reference-packages" ManagedOnly="true" />
     </Dependency>
     <!-- Intermediate is necessary for source build. -->
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.msbuild" Version="17.13.20-preview-25162-14">
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.msbuild" Version="17.13.21-preview-25169-06">
       <Uri>https://github.com/dotnet/msbuild</Uri>
-      <Sha>a4ef1e90fef9b56473708b7d308f982c7c9f46d9</Sha>
+      <Sha>0586a3f904d83c5f77f8407661429caadcbdc5f9</Sha>
       <SourceBuild RepoName="msbuild" ManagedOnly="true" />
     </Dependency>
-    <Dependency Name="Microsoft.Build" Version="17.13.20">
+    <Dependency Name="Microsoft.Build" Version="17.13.21">
       <Uri>https://github.com/dotnet/msbuild</Uri>
-      <Sha>a4ef1e90fef9b56473708b7d308f982c7c9f46d9</Sha>
+      <Sha>0586a3f904d83c5f77f8407661429caadcbdc5f9</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Build.Framework" Version="17.13.20">
+    <Dependency Name="Microsoft.Build.Framework" Version="17.13.21">
       <Uri>https://github.com/dotnet/msbuild</Uri>
-      <Sha>a4ef1e90fef9b56473708b7d308f982c7c9f46d9</Sha>
+      <Sha>0586a3f904d83c5f77f8407661429caadcbdc5f9</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Build.Tasks.Core" Version="17.13.20">
+    <Dependency Name="Microsoft.Build.Tasks.Core" Version="17.13.21">
       <Uri>https://github.com/dotnet/msbuild</Uri>
-      <Sha>a4ef1e90fef9b56473708b7d308f982c7c9f46d9</Sha>
+      <Sha>0586a3f904d83c5f77f8407661429caadcbdc5f9</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Build.Utilities.Core" Version="17.13.20">
+    <Dependency Name="Microsoft.Build.Utilities.Core" Version="17.13.21">
       <Uri>https://github.com/dotnet/msbuild</Uri>
-      <Sha>a4ef1e90fef9b56473708b7d308f982c7c9f46d9</Sha>
+      <Sha>0586a3f904d83c5f77f8407661429caadcbdc5f9</Sha>
     </Dependency>
     <Dependency Name="System.Reflection.Metadata" Version="8.0.0">
       <Uri>https://github.com/dotnet/runtime</Uri>
diff --git a/eng/Versions.props b/eng/Versions.props
index f4b5ae88140..5fff590d01b 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -94,7 +94,7 @@
     <MicrosoftVisualStudioShellPackagesVersion>17.10.40152</MicrosoftVisualStudioShellPackagesVersion>
     <VisualStudioProjectSystemPackagesVersion>17.10.526-pre-g1b474069f5</VisualStudioProjectSystemPackagesVersion>
     <MicrosoftVisualStudioThreadingPackagesVersion>17.10.41</MicrosoftVisualStudioThreadingPackagesVersion>
-    <MicrosoftBuildVersion>17.13.20</MicrosoftBuildVersion>
+    <MicrosoftBuildVersion>17.13.21</MicrosoftBuildVersion>
     <!-- Roslyn packages -->
     <MicrosoftCodeAnalysisEditorFeaturesVersion>$(RoslynVersion)</MicrosoftCodeAnalysisEditorFeaturesVersion>
     <MicrosoftCodeAnalysisEditorFeaturesTextVersion>$(RoslynVersion)</MicrosoftCodeAnalysisEditorFeaturesTextVersion>
@@ -130,9 +130,9 @@
     <MicrosoftVisualStudioShellImmutable150Version>15.0.25123-Dev15Preview</MicrosoftVisualStudioShellImmutable150Version>
     <!-- -->
     <!-- Microsoft Build packages -->
-    <MicrosoftBuildFrameworkVersion>17.13.20</MicrosoftBuildFrameworkVersion>
-    <MicrosoftBuildTasksCoreVersion>17.13.20</MicrosoftBuildTasksCoreVersion>
-    <MicrosoftBuildUtilitiesCoreVersion>17.13.20</MicrosoftBuildUtilitiesCoreVersion>
+    <MicrosoftBuildFrameworkVersion>17.13.21</MicrosoftBuildFrameworkVersion>
+    <MicrosoftBuildTasksCoreVersion>17.13.21</MicrosoftBuildTasksCoreVersion>
+    <MicrosoftBuildUtilitiesCoreVersion>17.13.21</MicrosoftBuildUtilitiesCoreVersion>
     <!-- -->
     <!-- Visual Studio Editor packages -->
     <MicrosoftVisualStudioCoreUtilityVersion>$(VisualStudioEditorPackagesVersion)</MicrosoftVisualStudioCoreUtilityVersion>