diff --git a/SUPPORTED_DEVICE_TYPES.md b/SUPPORTED_DEVICE_TYPES.md
index b8a98923c..7032c860c 100644
--- a/SUPPORTED_DEVICE_TYPES.md
+++ b/SUPPORTED_DEVICE_TYPES.md
@@ -10,6 +10,7 @@ Utility Device Types
 5. Bridged Node
 6. Electrical Sensor
 7. Device Energy Management
+8. Secondary Network Interface
 
 Application Device Types