diff --git a/src/Generator.Bind/Specifications/csharp.tm b/src/Generator.Bind/Specifications/csharp.tm
index 0106c1d3..c22e27ec 100644
--- a/src/Generator.Bind/Specifications/csharp.tm
+++ b/src/Generator.Bind/Specifications/csharp.tm
@@ -111,6 +111,14 @@ GLfixed, int
 GLeglImageOES, IntPtr
 
 
+# External egl buffer type added in OpenGL 4.6
+GLeglClientBufferEXT, IntPtr
+
+
+# nVidia vulkan entry point, added by NV_draw_vulkan_image extension
+GLVULKANPROCNV, IntPtr
+
+
 # OpenCL types.
 _cl_context, IntPtr
 _cl_event, IntPtr