diff --git a/Directory.Packages.props b/Directory.Packages.props
index 8cef8e25..bb0d5bb6 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -5,8 +5,8 @@
 
     <!-- Please use caution adding a dependency to MSBuild packages. Use latest for testing and
          use the minimum version for compilation for back compat. -->
-    <MicrosoftBuildPackageVersion>17.11.4</MicrosoftBuildPackageVersion>
-    <MicrosoftBuildMinimumPackageVersion>16.11.0</MicrosoftBuildMinimumPackageVersion>
+    <MicrosoftBuildPackageVersion>17.12.6</MicrosoftBuildPackageVersion>
+    <MicrosoftBuildMinimumPackageVersion>17.12.6</MicrosoftBuildMinimumPackageVersion>
   </PropertyGroup>
   <ItemGroup>
     <PackageVersion Include="CopyOnWrite" Version="0.5.0" Condition=" '$(TargetFramework)' != 'net46' " />
diff --git a/src/Artifacts/Microsoft.Build.Artifacts.csproj b/src/Artifacts/Microsoft.Build.Artifacts.csproj
index 158d8e1b..43c61908 100644
--- a/src/Artifacts/Microsoft.Build.Artifacts.csproj
+++ b/src/Artifacts/Microsoft.Build.Artifacts.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0</TargetFrameworks>
     <BuildOutputTargetFolder>build\</BuildOutputTargetFolder>
@@ -19,7 +19,7 @@
 
     <!-- Note these are API dependencies to support a minimum version of MSBuild. -->
     <PackageReference Include="Microsoft.Build.Tasks.Core" VersionOverride="$(MicrosoftBuildMinimumPackageVersion)" ExcludeAssets="Runtime" PrivateAssets="All" />
-    <PackageReference Include="System.Threading.Tasks.Dataflow" VersionOverride="4.9.0" PrivateAssets="All" />
+    <PackageReference Include="System.Threading.Tasks.Dataflow" VersionOverride="9.0.3" PrivateAssets="All" />
   </ItemGroup>
   <ItemGroup>
     <None Include="build\*"