diff --git a/msbuild/Xamarin.Mac.Tasks/Xamarin.Mac.Tasks.csproj b/msbuild/Xamarin.Mac.Tasks/Xamarin.Mac.Tasks.csproj
index ac9adab1f113..5ffd14f3ec8c 100644
--- a/msbuild/Xamarin.Mac.Tasks/Xamarin.Mac.Tasks.csproj
+++ b/msbuild/Xamarin.Mac.Tasks/Xamarin.Mac.Tasks.csproj
@@ -9,6 +9,7 @@
     <OutputType>Library</OutputType>
     <RootNamespace>Xamarin.Mac.Tasks</RootNamespace>
     <AssemblyName>Xamarin.Mac.Tasks</AssemblyName>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
diff --git a/msbuild/Xamarin.MacDev.Tasks.Core/Xamarin.MacDev.Tasks.Core.csproj b/msbuild/Xamarin.MacDev.Tasks.Core/Xamarin.MacDev.Tasks.Core.csproj
index 13935792b8f8..b4893776e977 100644
--- a/msbuild/Xamarin.MacDev.Tasks.Core/Xamarin.MacDev.Tasks.Core.csproj
+++ b/msbuild/Xamarin.MacDev.Tasks.Core/Xamarin.MacDev.Tasks.Core.csproj
@@ -9,6 +9,7 @@
     <OutputType>Library</OutputType>
     <RootNamespace>Xamarin.MacDev.Tasks</RootNamespace>
     <AssemblyName>Xamarin.MacDev.Tasks.Core</AssemblyName>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -39,10 +40,10 @@
     <Reference Include="System.Core" />
     <Reference Include="System.Xml" />
     <Reference Include="Mono.Posix" />
+    <Reference Include="System.Xml.Linq" />
     <Reference Include="Newtonsoft.Json">
-      <HintPath>..\packages\Newtonsoft.Json.6.0.8\lib\net40\Newtonsoft.Json.dll</HintPath>
+      <HintPath>..\packages\Newtonsoft.Json.6.0.8\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
-    <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\external\Xamarin.MacDev\Xamarin.MacDev\Xamarin.MacDev.csproj">
@@ -104,8 +105,8 @@
     <Compile Include="StringParserService.cs" />
     <Compile Include="PlatformFramework.cs" />
   </ItemGroup>
-  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup>
     <None Include="packages.config" />
   </ItemGroup>
+  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
 </Project>
diff --git a/msbuild/Xamarin.MacDev.Tasks.Core/packages.config b/msbuild/Xamarin.MacDev.Tasks.Core/packages.config
index c4dd61158452..747efc53e40d 100644
--- a/msbuild/Xamarin.MacDev.Tasks.Core/packages.config
+++ b/msbuild/Xamarin.MacDev.Tasks.Core/packages.config
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Newtonsoft.Json" version="6.0.8" targetFramework="net40" />
+  <package id="Newtonsoft.Json" version="6.0.8" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/msbuild/Xamarin.MacDev.Tasks/Xamarin.MacDev.Tasks.csproj b/msbuild/Xamarin.MacDev.Tasks/Xamarin.MacDev.Tasks.csproj
index 32c1eb64ec51..f24cafa1ba87 100644
--- a/msbuild/Xamarin.MacDev.Tasks/Xamarin.MacDev.Tasks.csproj
+++ b/msbuild/Xamarin.MacDev.Tasks/Xamarin.MacDev.Tasks.csproj
@@ -9,6 +9,7 @@
     <OutputType>Library</OutputType>
     <RootNamespace>Xamarin.MacDev.Tasks</RootNamespace>
     <AssemblyName>Xamarin.MacDev.Tasks</AssemblyName>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -38,7 +39,7 @@
     <Reference Include="Microsoft.Build.Utilities.v4.0" />
     <Reference Include="System.Core" />
     <Reference Include="System.Xml" />
-    <Reference Include="Mono.Cecil, Version=0.9.5.0, Culture=neutral, PublicKeyToken=0738eb9f132ed756" >
+    <Reference Include="Mono.Cecil, Version=0.9.5.0, Culture=neutral, PublicKeyToken=0738eb9f132ed756">
       <Private>True</Private>
     </Reference>
   </ItemGroup>
diff --git a/msbuild/Xamarin.ObjcBinding.Tasks/Xamarin.ObjcBinding.Tasks.csproj b/msbuild/Xamarin.ObjcBinding.Tasks/Xamarin.ObjcBinding.Tasks.csproj
index 3e87e6c97979..bbf3d2ec4f97 100644
--- a/msbuild/Xamarin.ObjcBinding.Tasks/Xamarin.ObjcBinding.Tasks.csproj
+++ b/msbuild/Xamarin.ObjcBinding.Tasks/Xamarin.ObjcBinding.Tasks.csproj
@@ -9,6 +9,7 @@
     <OutputType>Library</OutputType>
     <RootNamespace>Xamarin.ObjcBinding.Tasks</RootNamespace>
     <AssemblyName>Xamarin.ObjcBinding.Tasks</AssemblyName>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
diff --git a/msbuild/Xamarin.iOS.Tasks.Core/Xamarin.iOS.Tasks.Core.csproj b/msbuild/Xamarin.iOS.Tasks.Core/Xamarin.iOS.Tasks.Core.csproj
index 87825de24767..5dc88393d6f8 100644
--- a/msbuild/Xamarin.iOS.Tasks.Core/Xamarin.iOS.Tasks.Core.csproj
+++ b/msbuild/Xamarin.iOS.Tasks.Core/Xamarin.iOS.Tasks.Core.csproj
@@ -9,6 +9,7 @@
     <AssemblyName>Xamarin.iOS.Tasks.Core</AssemblyName>
     <ProductVersion>8.0.30703</ProductVersion>
     <SchemaVersion>2.0</SchemaVersion>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
diff --git a/msbuild/Xamarin.iOS.Tasks/Xamarin.iOS.Tasks.csproj b/msbuild/Xamarin.iOS.Tasks/Xamarin.iOS.Tasks.csproj
index 298a367d9b95..4386059ad68a 100644
--- a/msbuild/Xamarin.iOS.Tasks/Xamarin.iOS.Tasks.csproj
+++ b/msbuild/Xamarin.iOS.Tasks/Xamarin.iOS.Tasks.csproj
@@ -9,6 +9,7 @@
     <AssemblyName>Xamarin.iOS.Tasks</AssemblyName>
     <ProductVersion>8.0.30703</ProductVersion>
     <SchemaVersion>2.0</SchemaVersion>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
diff --git a/msbuild/tests/Xamarin.iOS.Tasks.Tests/Xamarin.iOS.Tasks.Tests.csproj b/msbuild/tests/Xamarin.iOS.Tasks.Tests/Xamarin.iOS.Tasks.Tests.csproj
index e887263c4ac4..d6f98684a3cd 100644
--- a/msbuild/tests/Xamarin.iOS.Tasks.Tests/Xamarin.iOS.Tasks.Tests.csproj
+++ b/msbuild/tests/Xamarin.iOS.Tasks.Tests/Xamarin.iOS.Tasks.Tests.csproj
@@ -9,6 +9,7 @@
     <OutputType>Library</OutputType>
     <RootNamespace>Xamarin.iOS.Tasks</RootNamespace>
     <AssemblyName>Xamarin.iOS.Tasks.Tests</AssemblyName>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -36,10 +37,10 @@
     <Reference Include="Microsoft.Build.Engine" />
     <Reference Include="Microsoft.Build.Utilities.v4.0" />
     <Reference Include="Mono.Cecil, Version=0.9.5.0, Culture=neutral, PublicKeyToken=0738eb9f132ed756" />
+    <Reference Include="System.Xml" />
     <Reference Include="nunit.framework">
       <HintPath>..\..\packages\NUnit.2.6.4\lib\nunit.framework.dll</HintPath>
     </Reference>
-    <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\..\external\Xamarin.MacDev\Xamarin.MacDev\Xamarin.MacDev.csproj">
diff --git a/msbuild/tests/Xamarin.iOS.Tasks.Tests/packages.config b/msbuild/tests/Xamarin.iOS.Tasks.Tests/packages.config
index a7462f842505..f43f6de59d30 100644
--- a/msbuild/tests/Xamarin.iOS.Tasks.Tests/packages.config
+++ b/msbuild/tests/Xamarin.iOS.Tasks.Tests/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="NUnit" version="2.6.4" targetFramework="net40" />
+  <package id="NUnit" version="2.6.4" targetFramework="net45" />
   <package id="NUnit.Runners" version="2.6.4" />
 </packages>
\ No newline at end of file