diff --git a/src/LanguageServer/Protocol/Microsoft.CodeAnalysis.LanguageServer.Protocol.csproj b/src/LanguageServer/Protocol/Microsoft.CodeAnalysis.LanguageServer.Protocol.csproj
index 621f0bb3c9201..84144864426f5 100644
--- a/src/LanguageServer/Protocol/Microsoft.CodeAnalysis.LanguageServer.Protocol.csproj
+++ b/src/LanguageServer/Protocol/Microsoft.CodeAnalysis.LanguageServer.Protocol.csproj
@@ -45,6 +45,7 @@
     <RestrictedInternalsVisibleTo Include="Microsoft.CodeAnalysis.Remote.Razor" Namespace="Roslyn.LanguageServer.Protocol" Partner="Razor" Key="$(RazorKey)" />
     <RestrictedInternalsVisibleTo Include="Microsoft.CodeAnalysis.Remote.Razor" Namespace="Roslyn.Text.Adornments" Partner="Razor" Key="$(RazorKey)" />
     <RestrictedInternalsVisibleTo Include="Microsoft.VisualStudio.LanguageServices.Razor" Namespace="Roslyn.LanguageServer.Protocol" Partner="Razor" Key="$(RazorKey)" />
+    <RestrictedInternalsVisibleTo Include="Microsoft.VisualStudioCode.RazorExtension" Namespace="Roslyn.LanguageServer.Protocol" Partner="Razor" Key="$(RazorKey)" />
     <RestrictedInternalsVisibleTo Include="rzls" Namespace="Roslyn.LanguageServer.Protocol" Partner="Razor" Key="$(RazorKey)" />
     <!-- Restricted IVT for protocol types for Razor tests and other non shipping code -->
     <RestrictedInternalsVisibleTo Include="Microsoft.AspNetCore.Razor.Microbenchmarks" Namespace="Roslyn.LanguageServer.Protocol" Partner="Razor" Key="$(RazorKey)" />