diff --git a/UnitTests/App.config b/UnitTests/App.config
index 215ae44c..feeae226 100644
--- a/UnitTests/App.config
+++ b/UnitTests/App.config
@@ -1,6 +1,9 @@
-<?xml version="1.0" encoding="utf-8" ?>
+<?xml version="1.0" encoding="utf-8"?>
 <configuration>
   <appSettings>
     <add key="ApiKey" value="INSERT API KEY HERE"/>
   </appSettings>
+  <startup>
+    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1"/>
+  </startup>
 </configuration>
\ No newline at end of file
diff --git a/UnitTests/UnitTests.csproj b/UnitTests/UnitTests.csproj
index ab07baad..9141ec1a 100644
--- a/UnitTests/UnitTests.csproj
+++ b/UnitTests/UnitTests.csproj
@@ -8,7 +8,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>UnitTests</RootNamespace>
     <AssemblyName>UnitTests</AssemblyName>
-    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <ProjectTypeGuids>{3AC096D0-A1C2-E12C-1390-A8335801FDAB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
     <VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">10.0</VisualStudioVersion>
@@ -16,6 +16,7 @@
     <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\$(VisualStudioVersion)\UITestExtensionPackages</ReferencePath>
     <IsCodedUITest>False</IsCodedUITest>
     <TestProjectType>UnitTest</TestProjectType>
+    <TargetFrameworkProfile />
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -62,15 +63,15 @@
     <Compile Include="FileScanTests.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
+  <ItemGroup>
+    <None Include="App.config" />
+  </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\VirusTotal.NET\VirusTotal.NET.csproj">
-      <Project>{F171FB32-C071-4A38-BA05-61DD8B73723A}</Project>
+      <Project>{f171fb32-c071-4a38-ba05-61dd8b73723a}</Project>
       <Name>VirusTotal.NET</Name>
     </ProjectReference>
   </ItemGroup>
-  <ItemGroup>
-    <None Include="App.config" />
-  </ItemGroup>
   <Choose>
     <When Condition="'$(VisualStudioVersion)' == '10.0' And '$(IsCodedUITest)' == 'True'">
       <ItemGroup>
diff --git a/VirusTotal.NET Client/App.config b/VirusTotal.NET Client/App.config
index 215ae44c..400d4812 100644
--- a/VirusTotal.NET Client/App.config	
+++ b/VirusTotal.NET Client/App.config	
@@ -1,6 +1,9 @@
-<?xml version="1.0" encoding="utf-8" ?>
+<?xml version="1.0" encoding="utf-8"?>
 <configuration>
   <appSettings>
     <add key="ApiKey" value="INSERT API KEY HERE"/>
   </appSettings>
-</configuration>
\ No newline at end of file
+  <startup>
+    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1"/>
+  </startup>
+</configuration>
diff --git a/VirusTotal.NET Client/VirusTotal.NET Client.csproj b/VirusTotal.NET Client/VirusTotal.NET Client.csproj
index 7199eea4..8ccb4bc5 100644
--- a/VirusTotal.NET Client/VirusTotal.NET Client.csproj	
+++ b/VirusTotal.NET Client/VirusTotal.NET Client.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="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
@@ -10,7 +10,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>VirusTotalNETClient</RootNamespace>
     <AssemblyName>VirusTotal.NET Client</AssemblyName>
-    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <TargetFrameworkProfile />
   </PropertyGroup>
@@ -30,6 +30,7 @@
     <CodeAnalysisRuleDirectories>;C:\Program Files (x86)\Microsoft Visual Studio 10.0\Team Tools\Static Analysis Tools\FxCop\\Rules</CodeAnalysisRuleDirectories>
     <CodeAnalysisIgnoreBuiltInRules>true</CodeAnalysisIgnoreBuiltInRules>
     <CodeAnalysisFailOnMissingRules>false</CodeAnalysisFailOnMissingRules>
+    <Prefer32Bit>false</Prefer32Bit>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|AnyCPU'">
     <OutputPath>bin\Release\</OutputPath>
@@ -47,6 +48,7 @@
     <CodeAnalysisRuleDirectories>;C:\Program Files (x86)\Microsoft Visual Studio 10.0\Team Tools\Static Analysis Tools\FxCop\\Rules</CodeAnalysisRuleDirectories>
     <CodeAnalysisIgnoreBuiltInRules>true</CodeAnalysisIgnoreBuiltInRules>
     <CodeAnalysisFailOnMissingRules>false</CodeAnalysisFailOnMissingRules>
+    <Prefer32Bit>false</Prefer32Bit>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
diff --git a/VirusTotal.NET/VirusTotal.NET.csproj b/VirusTotal.NET/VirusTotal.NET.csproj
index 0c3c560a..a2d6e40d 100644
--- a/VirusTotal.NET/VirusTotal.NET.csproj
+++ b/VirusTotal.NET/VirusTotal.NET.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="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
@@ -10,7 +10,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>VirusTotalNET</RootNamespace>
     <AssemblyName>VirusTotal.NET</AssemblyName>
-    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <TargetFrameworkProfile />
     <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\</SolutionDir>
@@ -35,6 +35,7 @@
     <CodeAnalysisRuleDirectories>;C:\Program Files (x86)\Microsoft Visual Studio 10.0\Team Tools\Static Analysis Tools\FxCop\\Rules</CodeAnalysisRuleDirectories>
     <CodeAnalysisIgnoreBuiltInRules>false</CodeAnalysisIgnoreBuiltInRules>
     <CodeAnalysisFailOnMissingRules>false</CodeAnalysisFailOnMissingRules>
+    <Prefer32Bit>false</Prefer32Bit>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|AnyCPU'">
     <OutputPath>bin\Release\</OutputPath>
@@ -53,15 +54,8 @@
     <CodeAnalysisRuleDirectories>;C:\Program Files (x86)\Microsoft Visual Studio 10.0\Team Tools\Static Analysis Tools\FxCop\\Rules</CodeAnalysisRuleDirectories>
     <CodeAnalysisIgnoreBuiltInRules>false</CodeAnalysisIgnoreBuiltInRules>
     <CodeAnalysisFailOnMissingRules>false</CodeAnalysisFailOnMissingRules>
+    <Prefer32Bit>false</Prefer32Bit>
   </PropertyGroup>
-  <ItemGroup>
-    <Reference Include="RestSharp, Version=105.2.3.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\packages\RestSharp.105.2.3\lib\net4\RestSharp.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
-    <Reference Include="System" />
-    <Reference Include="System.Core" />
-  </ItemGroup>
   <ItemGroup>
     <Compile Include="Exceptions\AccessDeniedException.cs" />
     <Compile Include="Exceptions\ResourceLimitException.cs" />
@@ -87,6 +81,13 @@
     <Compile Include="UnixTimeHelper.cs" />
     <Compile Include="VirusTotal.cs" />
   </ItemGroup>
+  <ItemGroup>
+    <Reference Include="RestSharp">
+      <HintPath>..\packages\RestSharp.105.2.3\lib\net46\RestSharp.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="System" />
+  </ItemGroup>
   <ItemGroup>
     <None Include="packages.config" />
   </ItemGroup>
diff --git a/VirusTotal.NET/packages.config b/VirusTotal.NET/packages.config
index 1acdfb47..29f56299 100644
--- a/VirusTotal.NET/packages.config
+++ b/VirusTotal.NET/packages.config
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="RestSharp" version="105.2.3" targetFramework="net40" />
+  <package id="RestSharp" version="105.2.3" targetFramework="net461" />
 </packages>
\ No newline at end of file