diff --git a/Facepunch.Steamworks/Facepunch.Steamworks.csproj b/Facepunch.Steamworks/Facepunch.Steamworks.csproj
index 8ad6677..a910c47 100644
--- a/Facepunch.Steamworks/Facepunch.Steamworks.csproj
+++ b/Facepunch.Steamworks/Facepunch.Steamworks.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
   
-    <TargetFrameworks>netstandard2.0;net45;net35</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net45;net35;net40</TargetFrameworks>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <AssemblyName>Facepunch.Steamworks</AssemblyName>
 	
@@ -30,7 +30,11 @@
   </ItemGroup>
   
   <PropertyGroup>
-	  <FrameworkPathOverride Condition="'$(TargetFramework)' == 'net35'">C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v3.5\Profile\Client</FrameworkPathOverride>
-	</PropertyGroup>
+	<FrameworkPathOverride Condition="'$(TargetFramework)' == 'net35'">C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v3.5\Profile\Client</FrameworkPathOverride>
+  </PropertyGroup>
+  
+ <PropertyGroup>
+	<FrameworkPathOverride Condition="'$(TargetFramework)' == 'net40'">C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.0\Profile\Client</FrameworkPathOverride>
+ </PropertyGroup>
 
 </Project>