diff --git a/SampleTestAssembly/SampleTestAssembly.csproj b/SampleTestAssembly/SampleTestAssembly.csproj
index 88b95d7..ed3c179 100644
--- a/SampleTestAssembly/SampleTestAssembly.csproj
+++ b/SampleTestAssembly/SampleTestAssembly.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\packages\Microsoft.Net.Compilers.2.2.0\build\Microsoft.Net.Compilers.props" Condition="Exists('..\packages\Microsoft.Net.Compilers.2.2.0\build\Microsoft.Net.Compilers.props')" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -65,6 +66,12 @@
     <None Include="packages.config" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <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\Microsoft.Net.Compilers.2.2.0\build\Microsoft.Net.Compilers.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Microsoft.Net.Compilers.2.2.0\build\Microsoft.Net.Compilers.props'))" />
+  </Target>
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">
diff --git a/SampleTestAssembly/packages.config b/SampleTestAssembly/packages.config
index 44a585a..bd8805d 100644
--- a/SampleTestAssembly/packages.config
+++ b/SampleTestAssembly/packages.config
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
+  <package id="Microsoft.Net.Compilers" version="2.2.0" targetFramework="net452" developmentDependency="true" />
   <package id="xunit" version="2.1.0" targetFramework="net452" />
   <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
   <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
diff --git a/xunit.runner.data/xunit.runner.data.csproj b/xunit.runner.data/xunit.runner.data.csproj
index ddeabe8..f82cf93 100644
--- a/xunit.runner.data/xunit.runner.data.csproj
+++ b/xunit.runner.data/xunit.runner.data.csproj
@@ -48,6 +48,11 @@
     <Compile Include="TestDataKind.cs" />
     <Compile Include="TestResultData.cs" />
   </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Net.Compilers">
+      <Version>2.2.0</Version>
+    </PackageReference>
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
diff --git a/xunit.runner.worker/packages.config b/xunit.runner.worker/packages.config
index f3e206d..6afb8ce 100644
--- a/xunit.runner.worker/packages.config
+++ b/xunit.runner.worker/packages.config
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
+  <package id="Microsoft.Net.Compilers" version="2.2.0" targetFramework="net46" developmentDependency="true" />
   <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
   <package id="xunit.runner.utility" version="2.1.0" targetFramework="net46" />
 </packages>
\ No newline at end of file
diff --git a/xunit.runner.worker/xunit.runner.worker.csproj b/xunit.runner.worker/xunit.runner.worker.csproj
index 5e37a52..33fcbe1 100644
--- a/xunit.runner.worker/xunit.runner.worker.csproj
+++ b/xunit.runner.worker/xunit.runner.worker.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\packages\Microsoft.Net.Compilers.2.2.0\build\Microsoft.Net.Compilers.props" Condition="Exists('..\packages\Microsoft.Net.Compilers.2.2.0\build\Microsoft.Net.Compilers.props')" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -13,6 +14,8 @@
     <FileAlignment>512</FileAlignment>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
     <TargetFrameworkProfile />
+    <NuGetPackageImportStamp>
+    </NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>
@@ -74,6 +77,12 @@
     </ProjectReference>
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\packages\Microsoft.Net.Compilers.2.2.0\build\Microsoft.Net.Compilers.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Microsoft.Net.Compilers.2.2.0\build\Microsoft.Net.Compilers.props'))" />
+  </Target>
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">
diff --git a/xunit.runner.wpf/packages.config b/xunit.runner.wpf/packages.config
index 29ea2e2..70abc07 100644
--- a/xunit.runner.wpf/packages.config
+++ b/xunit.runner.wpf/packages.config
@@ -1,18 +1,19 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="CommonServiceLocator" version="1.3" targetFramework="net452" />
+  <package id="Microsoft.Net.Compilers" version="2.2.0" targetFramework="net46" developmentDependency="true" />
   <package id="MvvmLight" version="5.3.0.0" targetFramework="net46" />
   <package id="MvvmLightLibs" version="5.3.0.0" targetFramework="net46" />
   <package id="NuGet.CommandLine" version="2.8.3" targetFramework="net46" />
-  <package id="System.Collections" version="4.0.10" targetFramework="net46" />
-  <package id="System.Collections.Immutable" version="1.1.37" targetFramework="net452" />
-  <package id="System.Diagnostics.Debug" version="4.0.10" targetFramework="net46" />
-  <package id="System.Globalization" version="4.0.10" targetFramework="net46" />
-  <package id="System.Linq" version="4.0.0" targetFramework="net46" />
-  <package id="System.Resources.ResourceManager" version="4.0.0" targetFramework="net46" />
-  <package id="System.Runtime" version="4.0.20" targetFramework="net46" />
-  <package id="System.Runtime.Extensions" version="4.0.10" targetFramework="net46" />
-  <package id="System.Threading" version="4.0.10" targetFramework="net46" />
+  <package id="System.Collections" version="4.3.0" targetFramework="net46" />
+  <package id="System.Collections.Immutable" version="1.4.0-preview1-25305-02" targetFramework="net46" />
+  <package id="System.Diagnostics.Debug" version="4.3.0" targetFramework="net46" />
+  <package id="System.Globalization" version="4.3.0" targetFramework="net46" />
+  <package id="System.Linq" version="4.3.0" targetFramework="net46" />
+  <package id="System.Resources.ResourceManager" version="4.3.0" targetFramework="net46" />
+  <package id="System.Runtime" version="4.3.0" targetFramework="net46" />
+  <package id="System.Runtime.Extensions" version="4.3.0" targetFramework="net46" />
+  <package id="System.Threading" version="4.3.0" targetFramework="net46" />
   <package id="Tvl.NuGet.BuildTasks" version="1.0.0-alpha002" targetFramework="net46" developmentDependency="true" />
   <package id="WindowsAPICodePack-Core" version="1.1.2" targetFramework="net46" />
   <package id="WindowsAPICodePack-Shell" version="1.1.1" targetFramework="net46" />
diff --git a/xunit.runner.wpf/xunit.runner.wpf.csproj b/xunit.runner.wpf/xunit.runner.wpf.csproj
index 01ad152..6609d05 100644
--- a/xunit.runner.wpf/xunit.runner.wpf.csproj
+++ b/xunit.runner.wpf/xunit.runner.wpf.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\packages\Microsoft.Net.Compilers.2.2.0\build\Microsoft.Net.Compilers.props" Condition="Exists('..\packages\Microsoft.Net.Compilers.2.2.0\build\Microsoft.Net.Compilers.props')" />
   <Import Project="..\packages\Tvl.NuGet.BuildTasks.1.0.0-alpha002\build\Tvl.NuGet.BuildTasks.props" Condition="Exists('..\packages\Tvl.NuGet.BuildTasks.1.0.0-alpha002\build\Tvl.NuGet.BuildTasks.props')" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
@@ -69,10 +70,10 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="System" />
-    <Reference Include="System.Collections.Immutable, Version=1.1.37.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\packages\System.Collections.Immutable.1.1.37\lib\portable-net45+win8+wp8+wpa81\System.Collections.Immutable.dll</HintPath>
-      <Private>True</Private>
+    <Reference Include="System.Collections.Immutable, Version=1.2.2.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+      <HintPath>..\packages\System.Collections.Immutable.1.4.0-preview1-25305-02\lib\portable-net45+win8+wp8+wpa81\System.Collections.Immutable.dll</HintPath>
     </Reference>
+    <Reference Include="System.ComponentModel.Composition" />
     <Reference Include="System.Data" />
     <Reference Include="System.Windows.Interactivity, Version=4.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <HintPath>..\packages\MvvmLightLibs.5.3.0.0\lib\net45\System.Windows.Interactivity.dll</HintPath>
@@ -208,6 +209,7 @@
     </PropertyGroup>
     <Error Condition="!Exists('..\packages\Tvl.NuGet.BuildTasks.1.0.0-alpha002\build\Tvl.NuGet.BuildTasks.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Tvl.NuGet.BuildTasks.1.0.0-alpha002\build\Tvl.NuGet.BuildTasks.props'))" />
     <Error Condition="!Exists('..\packages\Tvl.NuGet.BuildTasks.1.0.0-alpha002\build\Tvl.NuGet.BuildTasks.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Tvl.NuGet.BuildTasks.1.0.0-alpha002\build\Tvl.NuGet.BuildTasks.targets'))" />
+    <Error Condition="!Exists('..\packages\Microsoft.Net.Compilers.2.2.0\build\Microsoft.Net.Compilers.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Microsoft.Net.Compilers.2.2.0\build\Microsoft.Net.Compilers.props'))" />
   </Target>
   <Import Project="..\packages\Tvl.NuGet.BuildTasks.1.0.0-alpha002\build\Tvl.NuGet.BuildTasks.targets" Condition="Exists('..\packages\Tvl.NuGet.BuildTasks.1.0.0-alpha002\build\Tvl.NuGet.BuildTasks.targets')" />
 </Project>
\ No newline at end of file