diff --git a/Proculite.GpioRest/Proculite.GpioRest.csproj b/Proculite.GpioRest/Proculite.GpioRest.csproj
index 14e5bf3..7ee6ab7 100644
--- a/Proculite.GpioRest/Proculite.GpioRest.csproj
+++ b/Proculite.GpioRest/Proculite.GpioRest.csproj
@@ -9,6 +9,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="8.0.7" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="6.4.0" />
+    <PackageReference Include="System.Device.Gpio" Version="3.2.0" />
   </ItemGroup>
 
 </Project>