diff --git a/proto/src/system_messages.proto b/proto/src/system_messages.proto
index f903c20..a94bfe2 100644
--- a/proto/src/system_messages.proto
+++ b/proto/src/system_messages.proto
@@ -302,6 +302,10 @@
     // Package: android
     NOTE_WIFI_APM_NOTIFICATION = 73;
 
+    // Inform the user of bluetooth apm state changes.
+    // Package: android
+    NOTE_BT_APM_NOTIFICATION = 74;
+
     // ADD_NEW_IDS_ABOVE_THIS_LINE
     // Legacy IDs with arbitrary values appear below
     // Legacy IDs existed as stable non-conflicting constants prior to the O release