diff --git a/src/Benchmark/Benchmark.csproj b/src/Benchmark/Benchmark.csproj
index 17889600..02b9c59c 100644
--- a/src/Benchmark/Benchmark.csproj
+++ b/src/Benchmark/Benchmark.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
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@@ -65,11 +65,11 @@
     </ProjectReference>
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
-  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it.
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">
   </Target>
   <Target Name="AfterBuild">
   </Target>
   -->
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/Data/Matlab/Matlab.csproj b/src/Data/Matlab/Matlab.csproj
index 2a46c305..5f0608da 100644
--- a/src/Data/Matlab/Matlab.csproj
+++ b/src/Data/Matlab/Matlab.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -56,7 +56,7 @@
     <None Include="paket.references" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
-  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it.
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">
   </Target>
@@ -101,4 +101,4 @@
       </ItemGroup>
     </When>
   </Choose>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/Data/Text/Text.csproj b/src/Data/Text/Text.csproj
index cddbf608..0bdb4330 100644
--- a/src/Data/Text/Text.csproj
+++ b/src/Data/Text/Text.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -52,7 +52,7 @@
     <None Include="paket.references" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
-  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it.
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">
   </Target>
@@ -97,4 +97,4 @@
       </ItemGroup>
     </When>
   </Choose>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/DataUnitTests/UnitTests.csproj b/src/DataUnitTests/UnitTests.csproj
index 33f98ba3..7c78428b 100644
--- a/src/DataUnitTests/UnitTests.csproj
+++ b/src/DataUnitTests/UnitTests.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -69,7 +69,7 @@
     </ProjectReference>
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
-  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it.
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">
   </Target>
@@ -134,4 +134,4 @@
       </ItemGroup>
     </When>
   </Choose>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/FSharp/FSharp-Net35.fsproj b/src/FSharp/FSharp-Net35.fsproj
index a99949d6..c04a7d65 100644
--- a/src/FSharp/FSharp-Net35.fsproj
+++ b/src/FSharp/FSharp-Net35.fsproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\packages\FSharp.Compiler.Tools\build\FSharp.Compiler.Tools.props" Condition="Exists('..\..\packages\FSharp.Compiler.Tools\build\FSharp.Compiler.Tools.props')" Label="Paket" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
diff --git a/src/FSharp/FSharp-Portable47.fsproj b/src/FSharp/FSharp-Portable47.fsproj
index 85cccfd0..b234a553 100644
--- a/src/FSharp/FSharp-Portable47.fsproj
+++ b/src/FSharp/FSharp-Portable47.fsproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\packages\FSharp.Compiler.Tools\build\FSharp.Compiler.Tools.props" Condition="Exists('..\..\packages\FSharp.Compiler.Tools\build\FSharp.Compiler.Tools.props')" Label="Paket" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
diff --git a/src/FSharp/FSharp-XamariniOS.fsproj b/src/FSharp/FSharp-XamariniOS.fsproj
index 0549c087..fb6bed80 100644
--- a/src/FSharp/FSharp-XamariniOS.fsproj
+++ b/src/FSharp/FSharp-XamariniOS.fsproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\packages\FSharp.Compiler.Tools\build\FSharp.Compiler.Tools.props" Condition="Exists('..\..\packages\FSharp.Compiler.Tools\build\FSharp.Compiler.Tools.props')" Label="Paket" />
   <PropertyGroup>
     <Name>FSharp-XamariniOS</Name>
@@ -80,4 +80,4 @@
     </ProjectReference>
   </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath)\Xamarin\iOS\Xamarin.iOS.FSharp.targets" />
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/FSharpUnitTests/FSharpUnitTests-Net35.fsproj b/src/FSharpUnitTests/FSharpUnitTests-Net35.fsproj
index b67d1506..5b1878ff 100644
--- a/src/FSharpUnitTests/FSharpUnitTests-Net35.fsproj
+++ b/src/FSharpUnitTests/FSharpUnitTests-Net35.fsproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\packages\FSharp.Compiler.Tools\build\FSharp.Compiler.Tools.props" Condition="Exists('..\..\packages\FSharp.Compiler.Tools\build\FSharp.Compiler.Tools.props')" Label="Paket" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
@@ -151,4 +151,4 @@
       </ItemGroup>
     </When>
   </Choose>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/FSharpUnitTests/FSharpUnitTests-Portable47.fsproj b/src/FSharpUnitTests/FSharpUnitTests-Portable47.fsproj
index 20c37ec6..6f99e37b 100644
--- a/src/FSharpUnitTests/FSharpUnitTests-Portable47.fsproj
+++ b/src/FSharpUnitTests/FSharpUnitTests-Portable47.fsproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\packages\FSharp.Compiler.Tools\build\FSharp.Compiler.Tools.props" Condition="Exists('..\..\packages\FSharp.Compiler.Tools\build\FSharp.Compiler.Tools.props')" Label="Paket" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
@@ -115,4 +115,4 @@
       </ItemGroup>
     </When>
   </Choose>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/FSharpUnitTests/FSharpUnitTests.fsproj b/src/FSharpUnitTests/FSharpUnitTests.fsproj
index 69f61629..82518e8a 100644
--- a/src/FSharpUnitTests/FSharpUnitTests.fsproj
+++ b/src/FSharpUnitTests/FSharpUnitTests.fsproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\packages\FSharp.Compiler.Tools\build\FSharp.Compiler.Tools.props" Condition="Exists('..\..\packages\FSharp.Compiler.Tools\build\FSharp.Compiler.Tools.props')" Label="Paket" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
@@ -142,4 +142,4 @@
       </ItemGroup>
     </When>
   </Choose>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/Numerics/Numerics-Net35.csproj b/src/Numerics/Numerics-Net35.csproj
index 55a2f393..a0fe03c7 100644
--- a/src/Numerics/Numerics-Net35.csproj
+++ b/src/Numerics/Numerics-Net35.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -111,4 +111,4 @@
       </ItemGroup>
     </When>
   </Choose>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/Numerics/Numerics-Portable259.csproj b/src/Numerics/Numerics-Portable259.csproj
index aeed671c..253e8fd1 100644
--- a/src/Numerics/Numerics-Portable259.csproj
+++ b/src/Numerics/Numerics-Portable259.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
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diff --git a/src/Numerics/Numerics-Portable328.csproj b/src/Numerics/Numerics-Portable328.csproj
index 52664a58..d7a8db86 100644
--- a/src/Numerics/Numerics-Portable328.csproj
+++ b/src/Numerics/Numerics-Portable328.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
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diff --git a/src/Numerics/Numerics-Portable47.csproj b/src/Numerics/Numerics-Portable47.csproj
index 821c2c4c..e260fa05 100644
--- a/src/Numerics/Numerics-Portable47.csproj
+++ b/src/Numerics/Numerics-Portable47.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
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diff --git a/src/Numerics/Numerics-Portable7.csproj b/src/Numerics/Numerics-Portable7.csproj
index 979311c4..151891dc 100644
--- a/src/Numerics/Numerics-Portable7.csproj
+++ b/src/Numerics/Numerics-Portable7.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
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diff --git a/src/Numerics/Numerics-Portable78.csproj b/src/Numerics/Numerics-Portable78.csproj
index 6b9ca7c7..224a7c5d 100644
--- a/src/Numerics/Numerics-Portable78.csproj
+++ b/src/Numerics/Numerics-Portable78.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
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     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
diff --git a/src/TestData/TestData.csproj b/src/TestData/TestData.csproj
index 2bfc155d..865cf207 100644
--- a/src/TestData/TestData.csproj
+++ b/src/TestData/TestData.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -314,11 +314,11 @@
     </EmbeddedResource>
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
-  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it.
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">
   </Target>
   <Target Name="AfterBuild">
   </Target>
   -->
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/UnitTests/UnitTests-CUDA.csproj b/src/UnitTests/UnitTests-CUDA.csproj
index ba951aaa..94d999f6 100644
--- a/src/UnitTests/UnitTests-CUDA.csproj
+++ b/src/UnitTests/UnitTests-CUDA.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <MinimumVisualStudioVersion>10.0</MinimumVisualStudioVersion>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -84,4 +84,4 @@
       </ItemGroup>
     </When>
   </Choose>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/UnitTests/UnitTests-MKL.csproj b/src/UnitTests/UnitTests-MKL.csproj
index 09a6fc60..a2c03e20 100644
--- a/src/UnitTests/UnitTests-MKL.csproj
+++ b/src/UnitTests/UnitTests-MKL.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <MinimumVisualStudioVersion>10.0</MinimumVisualStudioVersion>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -84,4 +84,4 @@
       </ItemGroup>
     </When>
   </Choose>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/UnitTests/UnitTests-Net35.csproj b/src/UnitTests/UnitTests-Net35.csproj
index 2c91d3a3..19522721 100644
--- a/src/UnitTests/UnitTests-Net35.csproj
+++ b/src/UnitTests/UnitTests-Net35.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <MinimumVisualStudioVersion>10.0</MinimumVisualStudioVersion>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -103,4 +103,4 @@
       </ItemGroup>
     </When>
   </Choose>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/UnitTests/UnitTests-OpenBLAS.csproj b/src/UnitTests/UnitTests-OpenBLAS.csproj
index 4e342b6c..96d5f4c4 100644
--- a/src/UnitTests/UnitTests-OpenBLAS.csproj
+++ b/src/UnitTests/UnitTests-OpenBLAS.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <MinimumVisualStudioVersion>10.0</MinimumVisualStudioVersion>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -84,4 +84,4 @@
       </ItemGroup>
     </When>
   </Choose>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/UnitTests/UnitTests-Portable259.csproj b/src/UnitTests/UnitTests-Portable259.csproj
index e7505ff4..45da1042 100644
--- a/src/UnitTests/UnitTests-Portable259.csproj
+++ b/src/UnitTests/UnitTests-Portable259.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <MinimumVisualStudioVersion>10.0</MinimumVisualStudioVersion>
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@@ -77,4 +77,4 @@
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   </Choose>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/UnitTests/UnitTests-Portable328.csproj b/src/UnitTests/UnitTests-Portable328.csproj
index 12d23848..f7a584e7 100644
--- a/src/UnitTests/UnitTests-Portable328.csproj
+++ b/src/UnitTests/UnitTests-Portable328.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
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     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -77,4 +77,4 @@
       </ItemGroup>
     </When>
   </Choose>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/UnitTests/UnitTests-Portable47.csproj b/src/UnitTests/UnitTests-Portable47.csproj
index eb52721d..6d3becf9 100644
--- a/src/UnitTests/UnitTests-Portable47.csproj
+++ b/src/UnitTests/UnitTests-Portable47.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -77,4 +77,4 @@
       </ItemGroup>
     </When>
   </Choose>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/UnitTests/UnitTests-Portable7.csproj b/src/UnitTests/UnitTests-Portable7.csproj
index 6160d189..c23935db 100644
--- a/src/UnitTests/UnitTests-Portable7.csproj
+++ b/src/UnitTests/UnitTests-Portable7.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <MinimumVisualStudioVersion>10.0</MinimumVisualStudioVersion>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -77,4 +77,4 @@
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     </When>
   </Choose>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/UnitTests/UnitTests-Portable78.csproj b/src/UnitTests/UnitTests-Portable78.csproj
index 42d94405..fac9d7a6 100644
--- a/src/UnitTests/UnitTests-Portable78.csproj
+++ b/src/UnitTests/UnitTests-Portable78.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <MinimumVisualStudioVersion>10.0</MinimumVisualStudioVersion>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -77,4 +77,4 @@
       </ItemGroup>
     </When>
   </Choose>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/UnitTests/UnitTests.csproj b/src/UnitTests/UnitTests.csproj
index 9e790dbb..981fb6c2 100644
--- a/src/UnitTests/UnitTests.csproj
+++ b/src/UnitTests/UnitTests.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -456,4 +456,4 @@
       </ItemGroup>
     </When>
   </Choose>
-</Project>
\ No newline at end of file
+</Project>