diff --git a/NuGet.config b/NuGet.config
index 0fe60d91a3ff..fd4b9d1e2132 100644
--- a/NuGet.config
+++ b/NuGet.config
@@ -10,7 +10,7 @@
     <!--  Begin: Package sources from dotnet-aspnetcore -->
     <!--  End: Package sources from dotnet-aspnetcore -->
     <!--  Begin: Package sources from DotNet-msbuild-Trusted -->
-    <add key="darc-pub-DotNet-msbuild-Trusted-e7dfc71" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-DotNet-msbuild-Trusted-e7dfc719/nuget/v3/index.json" />
+    <add key="darc-pub-DotNet-msbuild-Trusted-4ae11fa" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-DotNet-msbuild-Trusted-4ae11fa8/nuget/v3/index.json" />
     <!--  End: Package sources from DotNet-msbuild-Trusted -->
     <!--  Begin: Package sources from dotnet-roslyn-analyzers -->
     <!--  End: Package sources from dotnet-roslyn-analyzers -->
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 72b7f814c319..455cba6d9496 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -69,18 +69,18 @@
       <Sha>08499c128ade77a490b735a268f6539f6c7ea0ff</Sha>
       <SourceBuild RepoName="emsdk" ManagedOnly="true" />
     </Dependency>
-    <Dependency Name="Microsoft.Build" Version="17.12.2">
+    <Dependency Name="Microsoft.Build" Version="17.12.3">
       <Uri>https://github.com/dotnet/msbuild</Uri>
-      <Sha>e7dfc7192370e6f6d92d1d4399b083ac5cdf700a</Sha>
+      <Sha>4ae11fa8e4a86aef804cc79a42102641ad528106</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Build.Localization" Version="17.12.2-preview-24503-05">
+    <Dependency Name="Microsoft.Build.Localization" Version="17.12.3-preview-24504-01">
       <Uri>https://github.com/dotnet/msbuild</Uri>
-      <Sha>e7dfc7192370e6f6d92d1d4399b083ac5cdf700a</Sha>
+      <Sha>4ae11fa8e4a86aef804cc79a42102641ad528106</Sha>
     </Dependency>
     <!-- Intermediate is necessary for source build. -->
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.msbuild" Version="17.12.2-preview-24503-05">
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.msbuild" Version="17.12.3-preview-24504-01">
       <Uri>https://github.com/dotnet/msbuild</Uri>
-      <Sha>e7dfc7192370e6f6d92d1d4399b083ac5cdf700a</Sha>
+      <Sha>4ae11fa8e4a86aef804cc79a42102641ad528106</Sha>
       <SourceBuild RepoName="msbuild" ManagedOnly="true" />
     </Dependency>
     <Dependency Name="Microsoft.FSharp.Compiler" Version="12.9.100-beta.24501.1">
diff --git a/eng/Versions.props b/eng/Versions.props
index aab3cd2c2be0..f3948ec3ba24 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -212,8 +212,8 @@
          then use that in Directory.Packages.props.
 
          At usage sites, either we use MicrosoftBuildMinimumVersion, or MicrosoftBuildVersion in source-only modes. -->
-    <MicrosoftBuildVersion>17.12.2</MicrosoftBuildVersion>
-    <MicrosoftBuildLocalizationVersion>17.12.2-preview-24503-05</MicrosoftBuildLocalizationVersion>
+    <MicrosoftBuildVersion>17.12.3</MicrosoftBuildVersion>
+    <MicrosoftBuildLocalizationVersion>17.12.3-preview-24504-01</MicrosoftBuildLocalizationVersion>
     <MicrosoftBuildMinimumVersion Condition="Exists('$(RepoRoot)src\Layout\redist\minimumMSBuildVersion') and '$(DotNetBuildSourceOnly)' != 'true'">$([System.IO.File]::ReadAllText('$(RepoRoot)src\Layout\redist\minimumMSBuildVersion').Trim())</MicrosoftBuildMinimumVersion>
   </PropertyGroup>
   <PropertyGroup>