diff --git a/Actions/ChemicalWeighing/Mesnac.Action.ChemicalWeighing/Mesnac.Action.ChemicalWeighing.csproj b/Actions/ChemicalWeighing/Mesnac.Action.ChemicalWeighing/Mesnac.Action.ChemicalWeighing.csproj
index 8368aa9..7b9342d 100644
--- a/Actions/ChemicalWeighing/Mesnac.Action.ChemicalWeighing/Mesnac.Action.ChemicalWeighing.csproj
+++ b/Actions/ChemicalWeighing/Mesnac.Action.ChemicalWeighing/Mesnac.Action.ChemicalWeighing.csproj
@@ -828,6 +828,15 @@
     <Folder Include="Product\PptShift\" />
   </ItemGroup>
   <ItemGroup>
+    <COMReference Include="Microsoft.Office.Core">
+      <Guid>{2DF8D04C-5BFA-101B-BDE5-00AA0044DE52}</Guid>
+      <VersionMajor>2</VersionMajor>
+      <VersionMinor>8</VersionMinor>
+      <Lcid>0</Lcid>
+      <WrapperTool>primary</WrapperTool>
+      <Isolated>False</Isolated>
+      <EmbedInteropTypes>True</EmbedInteropTypes>
+    </COMReference>
     <COMReference Include="Microsoft.Office.Interop.Excel">
       <Guid>{00020813-0000-0000-C000-000000000046}</Guid>
       <VersionMajor>1</VersionMajor>