diff --git a/Source/DGrok.Demo/DGrok.Demo.csproj b/Source/DGrok.Demo/DGrok.Demo.csproj
index 563748c..7baf4fb 100644
--- a/Source/DGrok.Demo/DGrok.Demo.csproj
+++ b/Source/DGrok.Demo/DGrok.Demo.csproj
@@ -1,4 +1,5 @@
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="14.0">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -11,6 +12,12 @@
     <AssemblyName>DGrok.Demo</AssemblyName>
     <StartupObject>
     </StartupObject>
+    <TargetFrameworkVersion>v2.0</TargetFrameworkVersion>
+    <FileUpgradeFlags>
+    </FileUpgradeFlags>
+    <UpgradeBackupLocation>
+    </UpgradeBackupLocation>
+    <OldToolsVersion>2.0</OldToolsVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
diff --git a/Source/DGrok.Framework/DGrok.Framework.csproj b/Source/DGrok.Framework/DGrok.Framework.csproj
index 9b011c0..616a1f2 100644
--- a/Source/DGrok.Framework/DGrok.Framework.csproj
+++ b/Source/DGrok.Framework/DGrok.Framework.csproj
@@ -1,4 +1,5 @@
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="14.0">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -9,6 +10,12 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>DGrok</RootNamespace>
     <AssemblyName>DGrok.Framework</AssemblyName>
+    <TargetFrameworkVersion>v2.0</TargetFrameworkVersion>
+    <FileUpgradeFlags>
+    </FileUpgradeFlags>
+    <UpgradeBackupLocation>
+    </UpgradeBackupLocation>
+    <OldToolsVersion>2.0</OldToolsVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
diff --git a/Source/DGrok.Tests/DGrok.Tests.csproj b/Source/DGrok.Tests/DGrok.Tests.csproj
index c1e236c..61e4583 100644
--- a/Source/DGrok.Tests/DGrok.Tests.csproj
+++ b/Source/DGrok.Tests/DGrok.Tests.csproj
@@ -1,4 +1,5 @@
-<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="14.0">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -11,6 +12,12 @@
     <AssemblyName>DGrok.Tests</AssemblyName>
     <StartupObject>
     </StartupObject>
+    <TargetFrameworkVersion>v2.0</TargetFrameworkVersion>
+    <FileUpgradeFlags>
+    </FileUpgradeFlags>
+    <UpgradeBackupLocation>
+    </UpgradeBackupLocation>
+    <OldToolsVersion>2.0</OldToolsVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
diff --git a/Source/DGrok.sln b/Source/DGrok.sln
index 6aa2312..21b252e 100644
--- a/Source/DGrok.sln
+++ b/Source/DGrok.sln
@@ -1,6 +1,8 @@
 
-Microsoft Visual Studio Solution File, Format Version 9.00
-# Visual C# Express 2005
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 14
+VisualStudioVersion = 14.0.25420.1
+MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DGrok.Tests", "DGrok.Tests\DGrok.Tests.csproj", "{2D898097-646E-4A26-BE9B-7FF85315F314}"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DGrok.Framework", "DGrok.Framework\DGrok.Framework.csproj", "{DFB43477-AB65-4108-B880-928816A347E4}"