diff --git a/SDL3-CS/Properties/AssemblyInfo.cs b/SDL3-CS/Properties/AssemblyInfo.cs
index 4fabb01..1572169 100644
--- a/SDL3-CS/Properties/AssemblyInfo.cs
+++ b/SDL3-CS/Properties/AssemblyInfo.cs
@@ -4,3 +4,7 @@
 using System.Runtime.CompilerServices;
 
 [assembly: InternalsVisibleTo("SDL3-CS.Tests")]
+
+// Allow access to internal CodeGen members (e.g. NativeTypeNameAttribute, etc.) for SDL sister projects:
+[assembly: InternalsVisibleTo("SDL3_ttf-CS")]
+[assembly: InternalsVisibleTo("SDL3_image-CS")]