diff --git a/adafruit_platformdetect/constants/boards.py b/adafruit_platformdetect/constants/boards.py
index 9682cf78..a099e51c 100644
--- a/adafruit_platformdetect/constants/boards.py
+++ b/adafruit_platformdetect/constants/boards.py
@@ -428,7 +428,7 @@
         "2c03112",
     ),
     RASPBERRY_PI_400: ("c03130",),
-    RASPBERRY_PI_CM4: ("a03140", "b03140", "c03140"),
+    RASPBERRY_PI_CM4: ("a03140", "b03140", "c03140", "d03140"),
 }
 
 # Onion omega boards