diff --git a/.gitignore b/.gitignore
index 5fb3596..6af7b7d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -193,3 +193,5 @@ opencoverCoverage.xml
 
 # NUnit
 results.xml
+
+package-lock.json
diff --git a/gruntfile.js b/gruntfile.js
index 277cfc1..521ea61 100644
--- a/gruntfile.js
+++ b/gruntfile.js
@@ -45,7 +45,7 @@ module.exports = function(grunt) {
           projectConfiguration: 'Release',
           platform: '<%= platform %>',
           targets: ['Clean', 'Rebuild'],
-          version: 12,
+          version: 4.0,
           buildParameters: {
             StyleCopEnabled: false
           }
@@ -57,7 +57,7 @@ module.exports = function(grunt) {
           projectConfiguration: 'Debug',
           platform: '<%= platform %>',
           targets: ['Clean', 'Rebuild'],
-          version: 12,
+          version: 4.0,
           buildParameters: {
             StyleCopEnabled: true,
             StyleCopTreatErrorsAsWarnings: false,
diff --git a/tests/packages.config b/tests/packages.config
index 56d28f5..9d04b6e 100644
--- a/tests/packages.config
+++ b/tests/packages.config
@@ -4,9 +4,10 @@
   <package id="BuildTools.StyleCopPlus" version="4.7.49.4" targetFramework="net45" />
   <package id="coveralls.net" version="0.6.0" targetFramework="net45" />
   <package id="Hylasoft.Behavior" version="0.1.3" targetFramework="net45" />
+  <package id="MSBuild.Microsoft.VisualStudio.Web.targets" version="14.0.0.3" targetFramework="net45" />
   <package id="NUnit" version="3.4.1" targetFramework="net45" />
   <package id="NUnit.ConsoleRunner" version="3.4.1" targetFramework="net45" />
   <package id="NUnit.Runners" version="3.4.1" targetFramework="net45" />
   <package id="OpenCover" version="4.6.519" targetFramework="net45" />
   <package id="ReportGenerator" version="2.4.5.0" targetFramework="net45" />
-</packages>
+</packages>
\ No newline at end of file
diff --git a/tests/tests.csproj b/tests/tests.csproj
index 60413c7..8bce927 100644
--- a/tests/tests.csproj
+++ b/tests/tests.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\packages\MSBuild.Microsoft.VisualStudio.Web.targets.14.0.0.3\build\MSBuild.Microsoft.VisualStudio.Web.targets.props" Condition="Exists('..\packages\MSBuild.Microsoft.VisualStudio.Web.targets.14.0.0.3\build\MSBuild.Microsoft.VisualStudio.Web.targets.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -19,7 +20,8 @@
     <StyleCopOverrideSettingsFile>Settings.StyleCop</StyleCopOverrideSettingsFile>
     <BuildToolsStyleCopVersion>4.7.44.0</BuildToolsStyleCopVersion>
     <TargetFrameworkProfile />
-    <NuGetPackageImportStamp>cf39ef6a</NuGetPackageImportStamp>
+    <NuGetPackageImportStamp>
+    </NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -137,7 +139,7 @@
   <Import Project="$(VSToolsPath)\TeamTest\Microsoft.TestTools.targets" Condition="Exists('$(VSToolsPath)\TeamTest\Microsoft.TestTools.targets')" />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <Import Project="..\packages\BuildTools.StyleCop.4.7.49.0\tools\StyleCop.targets" Condition="Exists('..\packages\BuildTools.StyleCop.4.7.49.0\tools\StyleCop.targets')" />
-  <Import Project="$(MSBuildExtensionsPath)\Microsoft\VisualStudio\v$(VisualStudioVersion)\Web\Microsoft.Web.Publishing.targets" />
+  <Import Project="..\packages\MSBuild.Microsoft.VisualStudio.Web.targets.14.0.0.3\tools\VSToolsPath\Web\Microsoft.Web.Publishing.targets" />
   <Target Name="___packages_BuildTools_StyleCop_4_7_49_0_tools_StyleCop_targets" Condition="$(StyleCopOutputFile)==''" BeforeTargets="BeforeBuild">
     <Error Text="BuildTools_StyleCop - the BuildTools_StyleCop package has not been restored.&#xD;&#xA;If you are running this from an IDE, make sure NuGet Package Restore has been enabled, then reload the solution and re-run the build.&#xD;&#xA;If you are running this from the command line, run the build again.&#xD;&#xA;If this is a CI server, you may want to make sure NuGet Package Restore runs before your build with:&#xD;&#xA;	msbuild solution.sln /t:restorepackages" />
   </Target>
@@ -151,4 +153,10 @@
   <Target Name="AfterBuild">
     <TransformXml Source="@(AppConfigWithTargetPath)" Transform="$(ProjectConfigTransformFileName)" Destination="@(AppConfigWithTargetPath->'$(OutDir)%(TargetPath)')" />
   </Target>
+  <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\MSBuild.Microsoft.VisualStudio.Web.targets.14.0.0.3\build\MSBuild.Microsoft.VisualStudio.Web.targets.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\MSBuild.Microsoft.VisualStudio.Web.targets.14.0.0.3\build\MSBuild.Microsoft.VisualStudio.Web.targets.props'))" />
+  </Target>
 </Project>
\ No newline at end of file