diff --git a/bacnet-stack/include/bacenum.h b/bacnet-stack/include/bacenum.h
index 69df641c..608821b9 100644
--- a/bacnet-stack/include/bacenum.h
+++ b/bacnet-stack/include/bacenum.h
@@ -379,6 +379,8 @@ typedef enum {
     PROP_COVU_PERIOD = 349,
     PROP_COVU_RECIPIENTS = 350,
     PROP_EVENT_MESSAGE_TEXTS = 351,
+    /* enumeration 372 is defined in Addendum 2010-ak */
+    PROP_SERIAL_NUMBER = 372,
     /* The special property identifiers all, optional, and required  */
     /* are reserved for use in the ReadPropertyConditional and */
     /* ReadPropertyMultiple services or services not defined in this standard. */
diff --git a/bacnet-stack/src/bactext.c b/bacnet-stack/src/bactext.c
index 6edf65bc..5b2cedf9 100644
--- a/bacnet-stack/src/bactext.c
+++ b/bacnet-stack/src/bactext.c
@@ -970,6 +970,8 @@ INDTEXT_DATA bacnet_property_names[] = {
     ,
     {PROP_EVENT_MESSAGE_TEXTS, "event-message-texts"}
     ,
+    {PROP_SERIAL_NUMBER, "serial-number"}
+    ,
     {0, NULL}
     /* Enumerated values 0-511 are reserved for definition by ASHRAE.
        Enumerated values 512-4194303 may be used by others subject to the