diff --git a/source/Halibut.Tests/PublicSurfaceAreaFixture.ThePublicSurfaceAreaShouldNotRegress.NETCore.approved.cs b/source/Halibut.Tests/PublicSurfaceAreaFixture.ThePublicSurfaceAreaShouldNotRegress.NETCore.approved.cs
index 863d6c8b..1976d0ae 100644
--- a/source/Halibut.Tests/PublicSurfaceAreaFixture.ThePublicSurfaceAreaShouldNotRegress.NETCore.approved.cs
+++ b/source/Halibut.Tests/PublicSurfaceAreaFixture.ThePublicSurfaceAreaShouldNotRegress.NETCore.approved.cs
@@ -668,4 +668,12 @@ public ProxyException(string message) { }
         public ProxyException(string message, Exception innerException) { }
         protected ProxyException(SerializationInfo info, StreamingContext context) { }
     }
+}
+namespace Halibut.Util
+{
+    public static class TypeExtensionMethods
+    {
+        public static bool AllowedOnHalibutInterface(Type type) { }
+        public static IEnumerable<MethodInfo> GetHalibutServiceMethods(Type serviceType) { }
+    }
 }
\ No newline at end of file
diff --git a/source/Halibut.Tests/PublicSurfaceAreaFixture.ThePublicSurfaceAreaShouldNotRegress.NETFramework.approved.cs b/source/Halibut.Tests/PublicSurfaceAreaFixture.ThePublicSurfaceAreaShouldNotRegress.NETFramework.approved.cs
index 867aa828..7051acd7 100644
--- a/source/Halibut.Tests/PublicSurfaceAreaFixture.ThePublicSurfaceAreaShouldNotRegress.NETFramework.approved.cs
+++ b/source/Halibut.Tests/PublicSurfaceAreaFixture.ThePublicSurfaceAreaShouldNotRegress.NETFramework.approved.cs
@@ -675,4 +675,12 @@ public ProxyException(string message) { }
         public ProxyException(string message, Exception innerException) { }
         protected ProxyException(SerializationInfo info, StreamingContext context) { }
     }
+}
+namespace Halibut.Util
+{
+    public static class TypeExtensionMethods
+    {
+        public static bool AllowedOnHalibutInterface(Type type) { }
+        public static IEnumerable<MethodInfo> GetHalibutServiceMethods(Type serviceType) { }
+    }
 }
\ No newline at end of file