diff --git a/vendor/NetVips/NetVips.csproj b/vendor/NetVips/NetVips.csproj
index 7e7d0d4..f51b5d3 100644
--- a/vendor/NetVips/NetVips.csproj
+++ b/vendor/NetVips/NetVips.csproj
@@ -19,6 +19,8 @@
   <ItemGroup>
     <InternalsVisibleTo Include="$(AssemblyName).Tests" />
     <InternalsVisibleTo Include="$(AssemblyName).Samples" />
+    <InternalsVisibleTo Include="Oh.My.Stitcher" />
+    <InternalsVisibleTo Include="Oh.My.Stitcher.Benchmark" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework'">