diff --git a/Directory.Build.props b/Directory.Build.props
index 620aa5b381..74b2f8246d 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,5 +1,4 @@
 <Project>
-  <Import Project="build\dependencies.props" />
   <Import Project="version.xml" />
 
   <PropertyGroup>
@@ -13,7 +12,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Internal.AspNetCore.Sdk" Version="$(InternalAspNetCoreSdkVersion)" PrivateAssets="All" />
+    <PackageReference Include="Internal.AspNetCore.Sdk" PrivateAssets="All" />
   </ItemGroup>
 
 </Project>
diff --git a/Directory.Build.targets b/Directory.Build.targets
index f75adf7e4d..bc118fd907 100644
--- a/Directory.Build.targets
+++ b/Directory.Build.targets
@@ -1,2 +1,14 @@
-<Project>
+<Project InitialTargets="EnsureKoreBuildRestored">
+  <Target Name="EnsureKoreBuildRestored" Condition=" '$(KoreBuildRestoreTargetsImported)' != 'true' AND '$(MSBuildProjectName)' != 'BenchmarkDotNet.Autogenerated'">
+    <PropertyGroup>
+      <_BootstrapperFile Condition=" $([MSBuild]::IsOSUnixLike()) ">build.sh</_BootstrapperFile>
+      <_BootstrapperFile Condition="! $([MSBuild]::IsOSUnixLike()) ">build.cmd</_BootstrapperFile>
+      <_BootstrapperError>
+        Package references have not been pinned. Run './$(_BootstrapperFile) /t:Pin'.
+        Also, you can run './$(_BootstrapperFile) /t:Restore' which will pin *and* restore packages. '$(_BootstrapperFile)' can be found in '$(MSBuildThisFileDirectory)'.
+      </_BootstrapperError>
+    </PropertyGroup>
+
+    <Error Code="KRB1001" Text="$(_BootstrapperError.Trim())" />
+  </Target>
 </Project>
diff --git a/NuGet.config b/NuGet.config
index 4e8a1f6de1..20060c934e 100644
--- a/NuGet.config
+++ b/NuGet.config
@@ -3,7 +3,6 @@
   <packageSources>
     <clear />
     <add key="AspNetCore" value="https://dotnet.myget.org/F/aspnetcore-ci-dev/api/v3/index.json" />
-    <add key="AspNetCoreTools" value="https://dotnet.myget.org/F/aspnetcore-tools/api/v3/index.json" />
     <add key="NuGet" value="https://api.nuget.org/v3/index.json" />
   </packageSources>
 </configuration>
diff --git a/build/dependencies.props b/build/dependencies.props
deleted file mode 100644
index 1235e00530..0000000000
--- a/build/dependencies.props
+++ /dev/null
@@ -1,12 +0,0 @@
-<Project>
-  <PropertyGroup>
-    <AspNetCoreVersion>2.1.0-*</AspNetCoreVersion>
-    <CoreFxVersion>4.4.0-*</CoreFxVersion>
-    <InternalAspNetCoreSdkVersion>2.1.1-*</InternalAspNetCoreSdkVersion>
-    <NETStandardImplicitPackageVersion>2.0.0-*</NETStandardImplicitPackageVersion>
-    <NETStandardLibraryNETFrameworkVersion>2.0.0-*</NETStandardLibraryNETFrameworkVersion>
-    <RuntimeFrameworkVersion Condition="'$(TargetFramework)'=='netcoreapp2.0'">2.0.0-*</RuntimeFrameworkVersion>
-    <TestSdkVersion>15.3.0</TestSdkVersion>
-    <XunitVersion>2.3.0-beta4-build3742</XunitVersion>
-  </PropertyGroup>
-</Project>
diff --git a/build/repo.props b/build/repo.props
new file mode 100644
index 0000000000..13fe1c296a
--- /dev/null
+++ b/build/repo.props
@@ -0,0 +1,6 @@
+<Project>
+  <ItemGroup>
+    <PackageLineup Include="Internal.AspNetCore.Universe.Lineup" Version="2.1.0-*" />
+    <PackageLineup Include="Internal.AspNetCore.Partners.Lineup" Version="2.1.0-*" />
+  </ItemGroup>
+</Project>
diff --git a/src/Microsoft.AspNetCore.Html.Abstractions/Microsoft.AspNetCore.Html.Abstractions.csproj b/src/Microsoft.AspNetCore.Html.Abstractions/Microsoft.AspNetCore.Html.Abstractions.csproj
index d6d301320f..79e5ea01a5 100755
--- a/src/Microsoft.AspNetCore.Html.Abstractions/Microsoft.AspNetCore.Html.Abstractions.csproj
+++ b/src/Microsoft.AspNetCore.Html.Abstractions/Microsoft.AspNetCore.Html.Abstractions.csproj
@@ -12,7 +12,7 @@ Microsoft.AspNetCore.Html.IHtmlContent</Description>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="System.Text.Encodings.Web" Version="$(CoreFxVersion)" />
+    <PackageReference Include="System.Text.Encodings.Web" />
   </ItemGroup>
 
 </Project>
diff --git a/src/Microsoft.Extensions.WebEncoders/Microsoft.Extensions.WebEncoders.csproj b/src/Microsoft.Extensions.WebEncoders/Microsoft.Extensions.WebEncoders.csproj
index 04359f96f5..cd0c144633 100755
--- a/src/Microsoft.Extensions.WebEncoders/Microsoft.Extensions.WebEncoders.csproj
+++ b/src/Microsoft.Extensions.WebEncoders/Microsoft.Extensions.WebEncoders.csproj
@@ -11,9 +11,9 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="$(AspNetCoreVersion)" />
-    <PackageReference Include="Microsoft.Extensions.Options" Version="$(AspNetCoreVersion)" />
-    <PackageReference Include="System.Text.Encodings.Web" Version="$(CoreFxVersion)" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" />
+    <PackageReference Include="Microsoft.Extensions.Options" />
+    <PackageReference Include="System.Text.Encodings.Web" />
   </ItemGroup>
 
 </Project>
diff --git a/test/Directory.Build.props b/test/Directory.Build.props
index 98d33955fd..a728ed268e 100644
--- a/test/Directory.Build.props
+++ b/test/Directory.Build.props
@@ -2,9 +2,9 @@
   <Import Project="..\Directory.Build.props" />
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.Testing" Version="$(AspNetCoreVersion)" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="$(TestSdkVersion)" />
-    <PackageReference Include="xunit" Version="$(XunitVersion)" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="$(XunitVersion)" />
+    <PackageReference Include="Microsoft.AspNetCore.Testing" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" />
+    <PackageReference Include="xunit" />
+    <PackageReference Include="xunit.runner.visualstudio" />
   </ItemGroup>
 </Project>
diff --git a/test/Microsoft.Extensions.WebEncoders.Tests/Microsoft.Extensions.WebEncoders.Tests.csproj b/test/Microsoft.Extensions.WebEncoders.Tests/Microsoft.Extensions.WebEncoders.Tests.csproj
index 0236c3e9af..c019c8b97e 100755
--- a/test/Microsoft.Extensions.WebEncoders.Tests/Microsoft.Extensions.WebEncoders.Tests.csproj
+++ b/test/Microsoft.Extensions.WebEncoders.Tests/Microsoft.Extensions.WebEncoders.Tests.csproj
@@ -10,7 +10,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="$(AspNetCoreVersion)" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" />
   </ItemGroup>
 
 </Project>