diff --git a/OpenNest.IO/OpenNest.IO.csproj b/OpenNest.IO/OpenNest.IO.csproj
index 3314127..674acca 100644
--- a/OpenNest.IO/OpenNest.IO.csproj
+++ b/OpenNest.IO/OpenNest.IO.csproj
@@ -8,5 +8,6 @@
     <ProjectReference Include="..\OpenNest.Core\OpenNest.Core.csproj" />
     <ProjectReference Include="..\OpenNest.Engine\OpenNest.Engine.csproj" />
     <PackageReference Include="ACadSharp" Version="3.1.32" />
+    <PackageReference Include="EPPlus" Version="7.6.2" />
   </ItemGroup>
 </Project>