Index: b/src/dbus-sharp.csproj
===================================================================
--- a/src/dbus-sharp.csproj
+++ b/src/dbus-sharp.csproj
@@ -13,7 +13,7 @@
     <RootNamespace>DBus</RootNamespace>
     <SignAssembly>true</SignAssembly>
     <AssemblyOriginatorKeyFile>..\dbus-sharp.snk</AssemblyOriginatorKeyFile>
-    <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>True</DebugSymbols>