diff --git a/build/dependencies.props b/build/dependencies.props
index 8dbb18b6c5..955457fe8d 100644
--- a/build/dependencies.props
+++ b/build/dependencies.props
@@ -1,13 +1,11 @@
 <Project>
   <PropertyGroup>
     <AspNetCoreVersion>2.0.0-*</AspNetCoreVersion>
-    <CoreFxVersion>4.3.0</CoreFxVersion>
     <IdentityModelActiveDirectoryVersion>3.13.8</IdentityModelActiveDirectoryVersion>
     <IdentityModelOpenIdVersion>2.1.3</IdentityModelOpenIdVersion>
     <InternalAspNetCoreSdkVersion>2.1.0-*</InternalAspNetCoreSdkVersion>
     <JsonNetVersion>10.0.1</JsonNetVersion>
     <NETStandardImplicitPackageVersion>$(BundledNETStandardPackageVersion)</NETStandardImplicitPackageVersion>
-    <OwinVersion>3.0.1</OwinVersion>
     <TestSdkVersion>15.0.0</TestSdkVersion>
     <XunitVersion>2.2.0</XunitVersion>
   </PropertyGroup>
diff --git a/src/Microsoft.AspNetCore.Authentication.JwtBearer/Microsoft.AspNetCore.Authentication.JwtBearer.csproj b/src/Microsoft.AspNetCore.Authentication.JwtBearer/Microsoft.AspNetCore.Authentication.JwtBearer.csproj
index 05bdd41313..c2b99e47db 100644
--- a/src/Microsoft.AspNetCore.Authentication.JwtBearer/Microsoft.AspNetCore.Authentication.JwtBearer.csproj
+++ b/src/Microsoft.AspNetCore.Authentication.JwtBearer/Microsoft.AspNetCore.Authentication.JwtBearer.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <Import Project="..\..\build\common.props" />
   <PropertyGroup>
     <Description>ASP.NET Core middleware that enables an application to receive an OpenID Connect bearer token.</Description>
@@ -11,7 +11,6 @@
   <ItemGroup>
     <ProjectReference Include="..\Microsoft.AspNetCore.Authentication\Microsoft.AspNetCore.Authentication.csproj" />
     <PackageReference Include="Microsoft.IdentityModel.Protocols.OpenIdConnect" Version="$(IdentityModelOpenIdVersion)" />
-    <PackageReference Include="System.Security.Claims" Version="$(CoreFxVersion)" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.Extensions.TaskCache.Sources" Version="$(AspNetCoreVersion)" PrivateAssets="All" />
   </ItemGroup>
diff --git a/src/Microsoft.AspNetCore.Authentication.OAuth/Microsoft.AspNetCore.Authentication.OAuth.csproj b/src/Microsoft.AspNetCore.Authentication.OAuth/Microsoft.AspNetCore.Authentication.OAuth.csproj
index 5fb75ead95..8e33372c1f 100644
--- a/src/Microsoft.AspNetCore.Authentication.OAuth/Microsoft.AspNetCore.Authentication.OAuth.csproj
+++ b/src/Microsoft.AspNetCore.Authentication.OAuth/Microsoft.AspNetCore.Authentication.OAuth.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <Import Project="..\..\build\common.props" />
 
@@ -17,8 +17,4 @@
     <PackageReference Include="Newtonsoft.Json" Version="$(JsonNetVersion)" />
   </ItemGroup>
 
-  <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard1.3' ">
-    <PackageReference Include="System.Runtime.Serialization.Primitives" Version="$(CoreFxVersion)" />
-  </ItemGroup>
-
 </Project>
diff --git a/src/Microsoft.AspNetCore.Authentication.OpenIdConnect/Microsoft.AspNetCore.Authentication.OpenIdConnect.csproj b/src/Microsoft.AspNetCore.Authentication.OpenIdConnect/Microsoft.AspNetCore.Authentication.OpenIdConnect.csproj
index aab8833d28..b3829b59dc 100644
--- a/src/Microsoft.AspNetCore.Authentication.OpenIdConnect/Microsoft.AspNetCore.Authentication.OpenIdConnect.csproj
+++ b/src/Microsoft.AspNetCore.Authentication.OpenIdConnect/Microsoft.AspNetCore.Authentication.OpenIdConnect.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <Import Project="..\..\build\common.props" />
   <PropertyGroup>
     <Description>ASP.NET Core middleware that enables an application to support the OpenID Connect authentication workflow.</Description>
@@ -13,6 +13,5 @@
     <PackageReference Include="Microsoft.Extensions.TaskCache.Sources" Version="$(AspNetCoreVersion)" PrivateAssets="All" />
     <PackageReference Include="Microsoft.IdentityModel.Protocols.OpenIdConnect" Version="$(IdentityModelOpenIdVersion)" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="$(AspNetCoreVersion)" />
-    <PackageReference Include="System.Security.Claims" Version="$(CoreFxVersion)" />
   </ItemGroup>
 </Project>
diff --git a/src/Microsoft.AspNetCore.Authorization/Microsoft.AspNetCore.Authorization.csproj b/src/Microsoft.AspNetCore.Authorization/Microsoft.AspNetCore.Authorization.csproj
index bc5b7be915..b39a7bf3dd 100644
--- a/src/Microsoft.AspNetCore.Authorization/Microsoft.AspNetCore.Authorization.csproj
+++ b/src/Microsoft.AspNetCore.Authorization/Microsoft.AspNetCore.Authorization.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <Import Project="..\..\build\common.props" />
 
@@ -19,8 +19,4 @@ Microsoft.AspNetCore.Authorization.AuthorizeAttribute</Description>
     <PackageReference Include="Microsoft.Extensions.TaskCache.Sources" Version="$(AspNetCoreVersion)" PrivateAssets="All" />
   </ItemGroup>
 
-  <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard1.3' ">
-    <PackageReference Include="System.Security.Claims" Version="$(CoreFxVersion)" />
-  </ItemGroup>
-
 </Project>
diff --git a/test/Microsoft.AspNetCore.CookiePolicy.Test/Microsoft.AspNetCore.CookiePolicy.Test.csproj b/test/Microsoft.AspNetCore.CookiePolicy.Test/Microsoft.AspNetCore.CookiePolicy.Test.csproj
index ca850d7549..34224e21f1 100644
--- a/test/Microsoft.AspNetCore.CookiePolicy.Test/Microsoft.AspNetCore.CookiePolicy.Test.csproj
+++ b/test/Microsoft.AspNetCore.CookiePolicy.Test/Microsoft.AspNetCore.CookiePolicy.Test.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <Import Project="..\..\build\common.props" />
   <PropertyGroup>
@@ -13,7 +13,6 @@
     <PackageReference Include="xunit.runner.visualstudio" Version="$(XunitVersion)" />
     <PackageReference Include="Microsoft.AspNetCore.TestHost" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="$(AspNetCoreVersion)" />
-    <PackageReference Include="System.Security.Claims" Version="$(CoreFxVersion)" />
     <PackageReference Include="xunit" Version="$(XunitVersion)" />
   </ItemGroup>
   <ItemGroup>