diff --git a/eng/Packages.props b/eng/Packages.props
index 30ae007906c..71606f3f644 100644
--- a/eng/Packages.props
+++ b/eng/Packages.props
@@ -17,23 +17,11 @@
     <PackageReference Update="Shouldly" Version="3.0.0" />
     <PackageReference Update="SourceLink.Create.CommandLine" Version="2.1.2" />
     <PackageReference Update="System.CodeDom" Version="4.4.0" />
-    <PackageReference Update="System.Collections.Concurrent" Version="4.3.0" />
     <PackageReference Update="System.Collections.Immutable" Version="5.0.0" />
-    <PackageReference Update="System.Diagnostics.TraceSource" Version="4.0.0" />
-    <PackageReference Update="System.IO.Compression" Version="4.3.0" />
-    <PackageReference Update="System.IO.FileSystem.Primitives" Version="4.3.0" />
-    <PackageReference Update="System.Linq.Parallel" Version="4.0.1" />
     <PackageReference Update="System.Memory" Version="4.5.4" />
-    <PackageReference Update="System.Net.Http" Version="4.3.4" />
     <PackageReference Update="System.Reflection.Metadata" Version="1.6.0" />
-    <PackageReference Update="System.Reflection.TypeExtensions" Version="4.1.0" />
     <PackageReference Update="System.Resources.Extensions" Version="4.6.0" />
-    <PackageReference Update="System.Resources.Writer" Version="4.0.0" />
     <PackageReference Update="System.Runtime.CompilerServices.Unsafe" Version="5.0.0"/>
-    <PackageReference Update="System.Runtime.InteropServices" Version="4.3.0" />
-    <PackageReference Update="System.Runtime.InteropServices.RuntimeInformation" Version="4.3.0" />
-    <PackageReference Update="System.Runtime.Loader" Version="4.0.0" />
-    <PackageReference Update="System.Runtime.Serialization.Primitives" Version="4.1.1" />
     <PackageReference Update="System.Security.Cryptography.Pkcs" Version="4.7.0" />
     <PackageReference Update="System.Security.Cryptography.Xml" Version="4.7.0" />
     <PackageReference Update="System.Security.Permissions" Version="4.7.0" />
@@ -41,8 +29,6 @@
     <PackageReference Update="System.Text.Encoding.CodePages" Version="4.0.1" />
     <PackageReference Update="System.Text.Json" Version="4.7.0" />
     <PackageReference Update="System.Threading.Tasks.Dataflow" Version="4.9.0" />
-    <PackageReference Update="System.Threading.Thread" Version="4.0.0" />
-    <PackageReference Update="System.Xml.XPath" Version="4.3.0" />
     <PackageReference Update="xunit.assert" Version="$(XUnitVersion)" />
     <PackageReference Update="xunit.console" Version="$(XUnitVersion)" />
     <PackageReference Update="xunit.core" Version="$(XUnitVersion)" />
diff --git a/src/Build.UnitTests/Microsoft.Build.Engine.UnitTests.csproj b/src/Build.UnitTests/Microsoft.Build.Engine.UnitTests.csproj
index dbb5365a805..756dffdbd0e 100644
--- a/src/Build.UnitTests/Microsoft.Build.Engine.UnitTests.csproj
+++ b/src/Build.UnitTests/Microsoft.Build.Engine.UnitTests.csproj
@@ -16,7 +16,6 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="System.Collections.Concurrent" />
     <PackageReference Include="Shouldly" />
     <PackageReference Include="Microsoft.CodeAnalysis.Build.Tasks" />
     <PackageReference Include="NuGet.Frameworks" >
diff --git a/src/Build/Microsoft.Build.csproj b/src/Build/Microsoft.Build.csproj
index a554ecfd951..6989f8cc24d 100644
--- a/src/Build/Microsoft.Build.csproj
+++ b/src/Build/Microsoft.Build.csproj
@@ -32,8 +32,6 @@
 
     <PackageReference Include="System.Collections.Immutable" />
     <PackageReference Include="System.Threading.Tasks.Dataflow" />
-    <PackageReference Include="System.Memory" />
-    <PackageReference Include="System.Runtime.CompilerServices.Unsafe"/>
     <PackageReference Include="System.Text.Json" />
 
     <PackageReference Include="System.Reflection.Metadata" Condition="'$(MonoBuild)' == 'true'" />
@@ -43,6 +41,7 @@
     <PackageReference Include="Microsoft.VisualStudio.Setup.Configuration.Interop" />
     <Reference Include="System.Configuration" />
     <Reference Include="System.IO.Compression" />
+    <PackageReference Include="System.Memory" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFrameworkIdentifier)' != '.NETFramework'">
diff --git a/src/MSBuild/MSBuild.csproj b/src/MSBuild/MSBuild.csproj
index 98f08298b0b..7d990720a96 100644
--- a/src/MSBuild/MSBuild.csproj
+++ b/src/MSBuild/MSBuild.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <Import Project="..\Shared\FileSystemSources.proj" />
   <Import Project="..\Shared\DebuggingSources.proj" />
@@ -197,7 +197,6 @@
     <Compile Include="XMake.cs">
       <ExcludeFromStyleCop>true</ExcludeFromStyleCop>
     </Compile>
-    <None Include="project.json" />
     <!-- This is to enable CodeMarkers in MSBuild.exe -->
     <!-- Win32 RC Files -->
     <RCResourceFile Include="native.rc" />
diff --git a/src/Tasks.UnitTests/Microsoft.Build.Tasks.UnitTests.csproj b/src/Tasks.UnitTests/Microsoft.Build.Tasks.UnitTests.csproj
index eab4bd23cd8..cd00af8329e 100644
--- a/src/Tasks.UnitTests/Microsoft.Build.Tasks.UnitTests.csproj
+++ b/src/Tasks.UnitTests/Microsoft.Build.Tasks.UnitTests.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFrameworks>$(RuntimeOutputTargetFrameworks)</TargetFrameworks>
@@ -13,7 +13,6 @@
 
   <ItemGroup>
     <PackageReference Include="System.Security.Principal.Windows" />
-    <PackageReference Include="System.Xml.XPath" />
     <PackageReference Include="Shouldly" />
 
     <ProjectReference Include="..\Build\Microsoft.Build.csproj" />
diff --git a/src/Tasks/Microsoft.Build.Tasks.csproj b/src/Tasks/Microsoft.Build.Tasks.csproj
index 0fe762863cc..988843a2973 100644
--- a/src/Tasks/Microsoft.Build.Tasks.csproj
+++ b/src/Tasks/Microsoft.Build.Tasks.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <Import Project="..\Shared\FileSystemSources.proj" />
   <Import Project="..\Shared\DebuggingSources.proj" />
@@ -996,8 +996,6 @@
   <ItemGroup Condition="'$(TargetFrameworkIdentifier)' != '.NETFramework'">
     <PackageReference Include="System.CodeDom" />
     <PackageReference Include="System.Reflection.Metadata" />
-    <PackageReference Include="System.Reflection.TypeExtensions" />
-    <PackageReference Include="System.Runtime.InteropServices" />
     <PackageReference Include="System.Security.Cryptography.Pkcs" />
     <PackageReference Include="System.Security.Cryptography.Xml" />
     <PackageReference Include="System.Security.Permissions" />
diff --git a/src/Utilities.UnitTests/Microsoft.Build.Utilities.UnitTests.csproj b/src/Utilities.UnitTests/Microsoft.Build.Utilities.UnitTests.csproj
index b560f1b1455..2f3dd9cba5a 100644
--- a/src/Utilities.UnitTests/Microsoft.Build.Utilities.UnitTests.csproj
+++ b/src/Utilities.UnitTests/Microsoft.Build.Utilities.UnitTests.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFrameworks>$(RuntimeOutputTargetFrameworks)</TargetFrameworks>
@@ -11,7 +11,6 @@
 
   <ItemGroup>
     <PackageReference Include="Shouldly" />
-    <PackageReference Include="System.IO.FileSystem.Primitives" />
     <PackageReference Include="Microsoft.CodeAnalysis.Build.Tasks" />
 
     <ProjectReference Include="..\Utilities\Microsoft.Build.Utilities.csproj" />