diff --git a/NuGet.config b/NuGet.config
index 687538b73073..754004b50fbb 100644
--- a/NuGet.config
+++ b/NuGet.config
@@ -28,7 +28,7 @@
     <!--  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-f1c1d39" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-DotNet-msbuild-Trusted-f1c1d39b/nuget/v3/index.json" />
+    <add key="darc-pub-DotNet-msbuild-Trusted-6be9954" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-DotNet-msbuild-Trusted-6be99546/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 4f1bf867ae3b..efa83cd60e23 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -73,18 +73,18 @@
       <Sha>0bcc3e67026ea44a16fb018a50e4e134c06ab3d6</Sha>
       <SourceBuild RepoName="emsdk" ManagedOnly="true" />
     </Dependency>
-    <Dependency Name="Microsoft.Build" Version="17.12.48">
+    <Dependency Name="Microsoft.Build" Version="17.12.49">
       <Uri>https://github.com/dotnet/msbuild</Uri>
-      <Sha>f1c1d39b591553de8fc6d6e72430cb3db7786272</Sha>
+      <Sha>6be995463a50d9dd400ec9ee1218f82f5a7cc209</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Build.Localization" Version="17.12.48-preview-25452-05">
+    <Dependency Name="Microsoft.Build.Localization" Version="17.12.49-preview-25453-01">
       <Uri>https://github.com/dotnet/msbuild</Uri>
-      <Sha>f1c1d39b591553de8fc6d6e72430cb3db7786272</Sha>
+      <Sha>6be995463a50d9dd400ec9ee1218f82f5a7cc209</Sha>
     </Dependency>
     <!-- Intermediate is necessary for source build. -->
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.msbuild" Version="17.12.48-preview-25452-05">
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.msbuild" Version="17.12.49-preview-25453-01">
       <Uri>https://github.com/dotnet/msbuild</Uri>
-      <Sha>f1c1d39b591553de8fc6d6e72430cb3db7786272</Sha>
+      <Sha>6be995463a50d9dd400ec9ee1218f82f5a7cc209</Sha>
       <SourceBuild RepoName="msbuild" ManagedOnly="true" />
     </Dependency>
     <Dependency Name="Microsoft.FSharp.Compiler" Version="12.9.101-beta.25070.7">
diff --git a/eng/Versions.props b/eng/Versions.props
index bf8836337981..e3f63f2e0bf3 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -180,8 +180,8 @@
          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>17.12.48</MicrosoftBuildVersion>
-    <MicrosoftBuildLocalizationVersion>17.12.48-preview-25452-05</MicrosoftBuildLocalizationVersion>
+    <MicrosoftBuildVersion>17.12.49</MicrosoftBuildVersion>
+    <MicrosoftBuildLocalizationVersion>17.12.49-preview-25453-01</MicrosoftBuildLocalizationVersion>
     <MicrosoftBuildMinimumVersion Condition="'$(DotNetBuildSourceOnly)' != 'true'">17.11.31</MicrosoftBuildMinimumVersion>
     <MinimumVSVersion>17.12</MinimumVSVersion>
   </PropertyGroup>