diff --git a/src/VisualStudio/Setup/VisualStudioSetup.csproj b/src/VisualStudio/Setup/VisualStudioSetup.csproj
index ce3a87a822d1687bf86be14dd6625845a41c00f2..744e94f05ae2cf49c9d3a7442208fa81b89d0b53 100644
--- a/src/VisualStudio/Setup/VisualStudioSetup.csproj
+++ b/src/VisualStudio/Setup/VisualStudioSetup.csproj
@@ -141,12 +141,12 @@
     <ProjectReference Include="..\CSharp\Impl\CSharpVisualStudio.csproj">
       <Project>{5defadbd-44eb-47a2-a53e-f1282cc9e4e9}</Project>
       <Name>CSharpVisualStudio</Name>
-      <IncludeOutputGroupsInVSIX>BuiltProjectOutputGroup</IncludeOutputGroupsInVSIX>
+      <IncludeOutputGroupsInVSIX>BuiltProjectOutputGroup;PkgDefProjectOutputGroup</IncludeOutputGroupsInVSIX>
     </ProjectReference>
     <ProjectReference Include="..\VisualBasic\Impl\BasicVisualStudio.vbproj">
       <Project>{d49439d7-56d2-450f-a4f0-74cb95d620e6}</Project>
       <Name>BasicVisualStudio</Name>
-      <IncludeOutputGroupsInVSIX>BuiltProjectOutputGroup</IncludeOutputGroupsInVSIX>
+      <IncludeOutputGroupsInVSIX>BuiltProjectOutputGroup;PkgDefProjectOutputGroup</IncludeOutputGroupsInVSIX>
     </ProjectReference>
   </ItemGroup>
   <ItemGroup>