5 files changed, 14 insertions, 10 deletions

diff --git a/src/FindLocalWix.props b/src/FindLocalWix.props
index a784e352..1666e4fe 100644
--- a/src/FindLocalWix.props
+++ b/src/FindLocalWix.props
@@ -3,6 +3,6 @@
 
 <Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
-    <WixTargetsPath Condition=" '$(Configuration)' == 'Debug' And Exists('$(MSBuildThisFileDirectory)..\..\Tools\README.md') ">$(MSBuildThisFileDirectory)..\..\Tools\build\Debug\net461\wix.targets</WixTargetsPath>
+    <WixTargetsPath Condition=" '$(Configuration)' == 'Debug' And Exists('$(MSBuildThisFileDirectory)..\..\Tools\README.md') And Exists('$(MSBuildThisFileDirectory)..\..\Tools\build\Debug\net461\wix.targets') ">$(MSBuildThisFileDirectory)..\..\Tools\build\Debug\net461\wix.targets</WixTargetsPath>
   </PropertyGroup>
 </Project>
diff --git a/src/test/WixToolsetTest.DifxApp/WixToolsetTest.DifxApp.csproj b/src/test/WixToolsetTest.DifxApp/WixToolsetTest.DifxApp.csproj
index d2d0de50..e205d24a 100644
--- a/src/test/WixToolsetTest.DifxApp/WixToolsetTest.DifxApp.csproj
+++ b/src/test/WixToolsetTest.DifxApp/WixToolsetTest.DifxApp.csproj
@@ -3,7 +3,7 @@
 
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>netcoreapp2.1</TargetFramework>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
 
@@ -23,7 +23,10 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="WixToolset.Core.TestPackage" Version="4.0.*" PrivateAssets="all" />
+    <PackageReference Include="WixToolset.Core" Version="4.0.*" />
+    <PackageReference Include="WixToolset.Core.Burn" Version="4.0.*" />
+    <PackageReference Include="WixToolset.Core.WindowsInstaller" Version="4.0.*" />
+    <PackageReference Include="WixToolset.Core.TestPackage" Version="4.0.*" />
   </ItemGroup>
 
   <ItemGroup>
@@ -31,8 +34,8 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.5.0" />
-    <PackageReference Include="xunit" Version="2.4.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.3.0" />
+    <PackageReference Include="xunit" Version="2.4.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1" PrivateAssets="All" />
   </ItemGroup>
 </Project>
diff --git a/src/wixext/DifxAppWindowsInstallerBackendBinderExtension.cs b/src/wixext/DifxAppWindowsInstallerBackendBinderExtension.cs
index 4d81c134..c87a661b 100644
--- a/src/wixext/DifxAppWindowsInstallerBackendBinderExtension.cs
+++ b/src/wixext/DifxAppWindowsInstallerBackendBinderExtension.cs
@@ -2,6 +2,7 @@
 
 namespace WixToolset.DifxApp
 {
+    using System.Collections.Generic;
     using System.Linq;
     using System.Xml;
     using WixToolset.Data.WindowsInstaller;
@@ -11,7 +12,7 @@ namespace WixToolset.DifxApp
     {
         private static readonly TableDefinition[] Tables = LoadTables();
 
-        protected override TableDefinition[] TableDefinitionsForTuples => Tables;
+        public override IEnumerable<TableDefinition> TableDefinitions => Tables;
 
         private static TableDefinition[] LoadTables()
         {
diff --git a/src/wixlib/difxapp.wixproj b/src/wixlib/difxapp.wixproj
index 9b414afd..a7f60ea5 100644
--- a/src/wixlib/difxapp.wixproj
+++ b/src/wixlib/difxapp.wixproj
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information. -->
 <Project DefaultTargets="Build" InitialTargets="EnsureWixToolsetInstalled" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="15.0">
-  <Import Project="..\..\packages\WixToolset.MSBuild.4.0.0-build-0035\build\WixToolset.MSBuild.props" Condition="Exists('..\..\packages\WixToolset.MSBuild.4.0.0-build-0035\build\WixToolset.MSBuild.props')" />
+  <Import Project="..\..\packages\WixToolset.MSBuild.4.0.0-build-0084\build\WixToolset.MSBuild.props" Condition="Exists('..\..\packages\WixToolset.MSBuild.4.0.0-build-0084\build\WixToolset.MSBuild.props')" />
   <Import Project="..\FindLocalWix.props" />
   <PropertyGroup>
     <ProjectGuid>{5066EB93-D8F7-4FAE-B687-024D7A81BD95}</ProjectGuid>
@@ -33,7 +33,7 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\Nerdbank.GitVersioning.2.1.65\build\Nerdbank.GitVersioning.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Nerdbank.GitVersioning.2.1.65\build\Nerdbank.GitVersioning.targets'))" />
-    <Error Condition="!Exists('..\..\packages\WixToolset.MSBuild.4.0.0-build-0035\build\WixToolset.MSBuild.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\WixToolset.MSBuild.4.0.0-build-0035\build\WixToolset.MSBuild.props'))" />
+    <Error Condition="!Exists('..\..\packages\WixToolset.MSBuild.4.0.0-build-0084\build\WixToolset.MSBuild.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\WixToolset.MSBuild.4.0.0-build-0084\build\WixToolset.MSBuild.props'))" />
   </Target>
   <Import Project="..\..\packages\Nerdbank.GitVersioning.2.1.65\build\Nerdbank.GitVersioning.targets" Condition="Exists('..\..\packages\Nerdbank.GitVersioning.2.1.65\build\Nerdbank.GitVersioning.targets')" />
 </Project>
diff --git a/src/wixlib/packages.config b/src/wixlib/packages.config
index 7964daed..e1b601f6 100644
--- a/src/wixlib/packages.config
+++ b/src/wixlib/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Nerdbank.GitVersioning" version="2.1.65" developmentDependency="true" targetFramework="net40" />
-  <package id="WixToolset.MSBuild" version="4.0.0-build-0035" developmentDependency="true" targetFramework="net40" />
+  <package id="WixToolset.MSBuild" version="4.0.0-build-0084" developmentDependency="true" targetFramework="net40" />
 </packages>
\ No newline at end of file