diff --git a/build/dependencies.props b/build/dependencies.props
index 44cb4ea1a6..892d2dd694 100644
--- a/build/dependencies.props
+++ b/build/dependencies.props
@@ -2,7 +2,6 @@
   <PropertyGroup>
     <AspNetCoreVersion>2.0.0-*</AspNetCoreVersion>
     <BenchmarkDotNetVersion>0.10.3</BenchmarkDotNetVersion>
-    <CoreFxVersion>4.3.0</CoreFxVersion>
     <DependencyModelVersion>2.0.0-*</DependencyModelVersion>
     <FSharpCoreVersion>4.1.0</FSharpCoreVersion>
     <FSharpNetSdkVersion>1.0.*</FSharpNetSdkVersion>
diff --git a/src/Microsoft.AspNetCore.Mvc.Abstractions/Microsoft.AspNetCore.Mvc.Abstractions.csproj b/src/Microsoft.AspNetCore.Mvc.Abstractions/Microsoft.AspNetCore.Mvc.Abstractions.csproj
index 62536d3e69..f6dcb4ff5b 100644
--- a/src/Microsoft.AspNetCore.Mvc.Abstractions/Microsoft.AspNetCore.Mvc.Abstractions.csproj
+++ b/src/Microsoft.AspNetCore.Mvc.Abstractions/Microsoft.AspNetCore.Mvc.Abstractions.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <Import Project="..\..\build\common.props" />
 
@@ -14,13 +14,11 @@ Microsoft.AspNetCore.Mvc.IActionResult</Description>
 
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.Routing.Abstractions" Version="$(AspNetCoreVersion)" />
-    <PackageReference Include="Microsoft.CSharp" Version="$(CoreFxVersion)" />
     <PackageReference Include="Microsoft.Extensions.ClosedGenericMatcher.Sources" Version="$(AspNetCoreVersion)" PrivateAssets="All" />
     <PackageReference Include="Microsoft.Extensions.CopyOnWriteDictionary.Sources" Version="$(AspNetCoreVersion)" PrivateAssets="All" />
     <PackageReference Include="Microsoft.Extensions.HashCodeCombiner.Sources" Version="$(AspNetCoreVersion)" PrivateAssets="All" />
     <PackageReference Include="Microsoft.Extensions.PropertyHelper.Sources" Version="$(AspNetCoreVersion)" PrivateAssets="All" />
     <PackageReference Include="Microsoft.Net.Http.Headers" Version="$(AspNetCoreVersion)" />
-    <PackageReference Include="System.ComponentModel.TypeConverter" Version="$(CoreFxVersion)" />
   </ItemGroup>
 
 </Project>
diff --git a/src/Microsoft.AspNetCore.Mvc.Core/Microsoft.AspNetCore.Mvc.Core.csproj b/src/Microsoft.AspNetCore.Mvc.Core/Microsoft.AspNetCore.Mvc.Core.csproj
index 1735c32c34..5d7ad0aebd 100644
--- a/src/Microsoft.AspNetCore.Mvc.Core/Microsoft.AspNetCore.Mvc.Core.csproj
+++ b/src/Microsoft.AspNetCore.Mvc.Core/Microsoft.AspNetCore.Mvc.Core.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <Import Project="..\..\build\common.props" />
 
@@ -37,8 +37,6 @@ Microsoft.AspNetCore.Mvc.RouteAttribute</Description>
     <PackageReference Include="Microsoft.Extensions.PropertyActivator.Sources" Version="$(AspNetCoreVersion)" PrivateAssets="All" />
     <PackageReference Include="Microsoft.Extensions.PropertyHelper.Sources" Version="$(AspNetCoreVersion)" PrivateAssets="All" />
     <PackageReference Include="Microsoft.Extensions.SecurityHelper.Sources" Version="$(AspNetCoreVersion)" PrivateAssets="All" />
-    <PackageReference Include="System.Buffers" Version="$(CoreFxVersion)" />
-    <PackageReference Include="System.Diagnostics.DiagnosticSource" Version="$(CoreFxVersion)" />
   </ItemGroup>
 
 </Project>
diff --git a/src/Microsoft.AspNetCore.Mvc.DataAnnotations/Microsoft.AspNetCore.Mvc.DataAnnotations.csproj b/src/Microsoft.AspNetCore.Mvc.DataAnnotations/Microsoft.AspNetCore.Mvc.DataAnnotations.csproj
index 5e86d31655..684800eb4d 100644
--- a/src/Microsoft.AspNetCore.Mvc.DataAnnotations/Microsoft.AspNetCore.Mvc.DataAnnotations.csproj
+++ b/src/Microsoft.AspNetCore.Mvc.DataAnnotations/Microsoft.AspNetCore.Mvc.DataAnnotations.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <Import Project="..\..\build\common.props" />
 
   <PropertyGroup>
@@ -15,6 +15,5 @@
     <PackageReference Include="Microsoft.Extensions.ClosedGenericMatcher.Sources" Version="$(AspNetCoreVersion)" PrivateAssets="All" />
     <PackageReference Include="Microsoft.Extensions.CopyOnWriteDictionary.Sources" Version="$(AspNetCoreVersion)" PrivateAssets="All" />
     <PackageReference Include="Microsoft.Extensions.Localization" Version="$(AspNetCoreVersion)" />
-    <PackageReference Include="System.ComponentModel.Annotations" Version="$(CoreFxVersion)" />
   </ItemGroup>
 </Project>
diff --git a/src/Microsoft.AspNetCore.Mvc.Formatters.Xml/Microsoft.AspNetCore.Mvc.Formatters.Xml.csproj b/src/Microsoft.AspNetCore.Mvc.Formatters.Xml/Microsoft.AspNetCore.Mvc.Formatters.Xml.csproj
index 7198b72c69..7318907821 100644
--- a/src/Microsoft.AspNetCore.Mvc.Formatters.Xml/Microsoft.AspNetCore.Mvc.Formatters.Xml.csproj
+++ b/src/Microsoft.AspNetCore.Mvc.Formatters.Xml/Microsoft.AspNetCore.Mvc.Formatters.Xml.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <Import Project="..\..\build\common.props" />
 
   <PropertyGroup>
@@ -14,7 +14,5 @@
 
     <PackageReference Include="Microsoft.Extensions.ClosedGenericMatcher.Sources" Version="$(AspNetCoreVersion)" PrivateAssets="All" />
     <PackageReference Include="Microsoft.Extensions.PropertyHelper.Sources" Version="$(AspNetCoreVersion)" PrivateAssets="All" />
-    <PackageReference Include="System.Runtime.Serialization.Xml" Version="$(CoreFxVersion)" />
-    <PackageReference Include="System.Xml.XmlSerializer" Version="$(CoreFxVersion)" />
   </ItemGroup>
 </Project>
diff --git a/src/Microsoft.AspNetCore.Mvc.ViewFeatures/Microsoft.AspNetCore.Mvc.ViewFeatures.csproj b/src/Microsoft.AspNetCore.Mvc.ViewFeatures/Microsoft.AspNetCore.Mvc.ViewFeatures.csproj
index 3b34229a30..64d45d025d 100644
--- a/src/Microsoft.AspNetCore.Mvc.ViewFeatures/Microsoft.AspNetCore.Mvc.ViewFeatures.csproj
+++ b/src/Microsoft.AspNetCore.Mvc.ViewFeatures/Microsoft.AspNetCore.Mvc.ViewFeatures.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <Import Project="..\..\build\common.props" />
 
@@ -31,8 +31,6 @@ Microsoft.AspNetCore.Mvc.ViewComponent</Description>
     <PackageReference Include="Microsoft.Extensions.PropertyHelper.Sources" Version="$(AspNetCoreVersion)" PrivateAssets="All" />
     <PackageReference Include="Microsoft.Extensions.WebEncoders" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Newtonsoft.Json.Bson" Version="$(JsonNetBsonVersion)" />
-    <PackageReference Include="System.Buffers" Version="$(CoreFxVersion)" />
-    <PackageReference Include="System.Runtime.Serialization.Primitives" Version="$(CoreFxVersion)" />
   </ItemGroup>
 
 </Project>
diff --git a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Microsoft.AspNetCore.Mvc.WebApiCompatShim.csproj b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Microsoft.AspNetCore.Mvc.WebApiCompatShim.csproj
index c2e0f278c4..77b704dcd0 100644
--- a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Microsoft.AspNetCore.Mvc.WebApiCompatShim.csproj
+++ b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Microsoft.AspNetCore.Mvc.WebApiCompatShim.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <Import Project="..\..\build\common.props" />
 
@@ -20,8 +20,6 @@ System.Web.Http.ApiController</Description>
     <PackageReference Include="Microsoft.AspNet.WebApi.Client" Version="$(WebApiClientVersion)" />
     <PackageReference Include="Microsoft.AspNetCore.WebUtilities" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.Extensions.PropertyHelper.Sources" Version="$(AspNetCoreVersion)" PrivateAssets="All" />
-    <PackageReference Include="System.Runtime.Serialization.Xml" Version="$(CoreFxVersion)" />
-    <PackageReference Include="System.Xml.XmlSerializer" Version="$(CoreFxVersion)" />
   </ItemGroup>
 
 </Project>
diff --git a/test/WebSites/WebApiCompatShimWebSite/WebApiCompatShimWebSite.csproj b/test/WebSites/WebApiCompatShimWebSite/WebApiCompatShimWebSite.csproj
index 92aeaf2bd6..bc8adcf63a 100644
--- a/test/WebSites/WebApiCompatShimWebSite/WebApiCompatShimWebSite.csproj
+++ b/test/WebSites/WebApiCompatShimWebSite/WebApiCompatShimWebSite.csproj
@@ -14,6 +14,5 @@
     <PackageReference Include="Microsoft.AspNetCore.Server.IISIntegration" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.AspNetCore.Server.Kestrel" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="$(AspNetCoreVersion)" />
-    <PackageReference Include="System.Diagnostics.TraceSource" Version="$(CoreFxVersion)" />
   </ItemGroup>
 </Project>