diff --git a/src/bindings/csharp/openalprnet-cli/openalprnet-cli.csproj b/src/bindings/csharp/openalprnet-cli/openalprnet-cli.csproj
index 7e30a53..c193a24 100644
--- a/src/bindings/csharp/openalprnet-cli/openalprnet-cli.csproj
+++ b/src/bindings/csharp/openalprnet-cli/openalprnet-cli.csproj
@@ -67,6 +67,7 @@
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />
+    <Reference Include="System.Drawing" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="Microsoft.CSharp" />