diff --git a/NuGet.config b/NuGet.config
index 3da372c869d7..7409d3265d40 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-43a2496" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-DotNet-msbuild-Trusted-43a24969/nuget/v3/index.json" />
+    <add key="darc-pub-DotNet-msbuild-Trusted-1cce779" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-DotNet-msbuild-Trusted-1cce7796/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 f58a9604fc1a..a88defe4bf43 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -73,18 +73,18 @@
       <Sha>763d10a1a251be35337ee736832bfde3f9200672</Sha>
       <SourceBuild RepoName="emsdk" ManagedOnly="true" />
     </Dependency>
-    <Dependency Name="Microsoft.Build" Version="17.12.9">
+    <Dependency Name="Microsoft.Build" Version="17.12.12">
       <Uri>https://github.com/dotnet/msbuild</Uri>
-      <Sha>43a24969a23bd2dd76cd26be26210e2afcd0595e</Sha>
+      <Sha>1cce77968bca1366760f361c837ffbc3a6af70f0</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Build.Localization" Version="17.12.9-preview-24524-01">
+    <Dependency Name="Microsoft.Build.Localization" Version="17.12.12-preview-24571-01">
       <Uri>https://github.com/dotnet/msbuild</Uri>
-      <Sha>43a24969a23bd2dd76cd26be26210e2afcd0595e</Sha>
+      <Sha>1cce77968bca1366760f361c837ffbc3a6af70f0</Sha>
     </Dependency>
     <!-- Intermediate is necessary for source build. -->
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.msbuild" Version="17.12.9-preview-24524-01">
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.msbuild" Version="17.12.12-preview-24571-01">
       <Uri>https://github.com/dotnet/msbuild</Uri>
-      <Sha>43a24969a23bd2dd76cd26be26210e2afcd0595e</Sha>
+      <Sha>1cce77968bca1366760f361c837ffbc3a6af70f0</Sha>
       <SourceBuild RepoName="msbuild" ManagedOnly="true" />
     </Dependency>
     <Dependency Name="Microsoft.FSharp.Compiler" Version="12.9.100-beta.24522.2">
diff --git a/eng/Versions.props b/eng/Versions.props
index 9e280d6d7a98..593676230051 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -196,8 +196,8 @@
          At usage sites, either we use MicrosoftBuildMinimumVersion, or MicrosoftBuildVersion in source-only modes.
 
          Additionally, set the MinimumVSVersion for the installer UI that's required for targeting NetCurrent -->
-    <MicrosoftBuildVersion>17.12.9</MicrosoftBuildVersion>
-    <MicrosoftBuildLocalizationVersion>17.12.9-preview-24524-01</MicrosoftBuildLocalizationVersion>
+    <MicrosoftBuildVersion>17.12.12</MicrosoftBuildVersion>
+    <MicrosoftBuildLocalizationVersion>17.12.12-preview-24571-01</MicrosoftBuildLocalizationVersion>
     <MicrosoftBuildMinimumVersion Condition="'$(DotNetBuildSourceOnly)' != 'true'">17.11.4</MicrosoftBuildMinimumVersion>
     <MinimumVSVersion>17.12</MinimumVSVersion>
   </PropertyGroup>