diff --git a/Excel_Adapter/Excel_Adapter.csproj b/Excel_Adapter/Excel_Adapter.csproj
index 8038959..2540858 100644
--- a/Excel_Adapter/Excel_Adapter.csproj
+++ b/Excel_Adapter/Excel_Adapter.csproj
@@ -83,6 +83,7 @@
 
   <ItemGroup>
     <PackageReference Include="ClosedXML" Version="0.95.0" />
+    <PackageReference Include="DocumentFormat.OpenXml" Version="2.19.0" />
     <PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
     <PackageReference Include="System.Security.Permissions" Version="8.0.0-rc.2.23479.6" />
   </ItemGroup>