diff --git a/GBase/GBase.csproj b/GBase/GBase.csproj
index 917f8f6..cd8bbf9 100644
--- a/GBase/GBase.csproj
+++ b/GBase/GBase.csproj
@@ -24,6 +24,7 @@
   <ItemGroup>
     <PackageReference Include="LightweightIocContainer" Version="2.1.0" />
     <PackageReference Include="Microsoft.CodeAnalysis" Version="3.5.0-beta2-final" />
+    <PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
   </ItemGroup>
 
   <ItemGroup>