diff --git a/src/OpenTelemetry.Api.ProviderBuilderExtensions/AssemblyInfo.cs b/src/OpenTelemetry.Api.ProviderBuilderExtensions/AssemblyInfo.cs
index 2145d23c19..68ff9c2970 100644
--- a/src/OpenTelemetry.Api.ProviderBuilderExtensions/AssemblyInfo.cs
+++ b/src/OpenTelemetry.Api.ProviderBuilderExtensions/AssemblyInfo.cs
@@ -6,8 +6,10 @@
 [assembly: InternalsVisibleTo("OpenTelemetry" + AssemblyInfo.PublicKey)]
 [assembly: InternalsVisibleTo("OpenTelemetry.Tests" + AssemblyInfo.PublicKey)]
 [assembly: InternalsVisibleTo("OpenTelemetry.Api.ProviderBuilderExtensions.Tests" + AssemblyInfo.PublicKey)]
+[assembly: InternalsVisibleTo("OpenTelemetry.Exporter.OpenTelemetryProtocol.Tests" + AssemblyInfo.PublicKey)]
 
 #if !EXPOSE_EXPERIMENTAL_FEATURES
+[assembly: InternalsVisibleTo("OpenTelemetry.Exporter.OpenTelemetryProtocol" + AssemblyInfo.PublicKey)]
 [assembly: InternalsVisibleTo("OpenTelemetry.Exporter.Console" + AssemblyInfo.PublicKey)]
 [assembly: InternalsVisibleTo("OpenTelemetry.Extensions.Hosting" + AssemblyInfo.PublicKey)]
 #endif