diff --git a/proto/src/metrics_constants.proto b/proto/src/metrics_constants.proto
index c7f518c15525a..c1c385aa82074 100644
--- a/proto/src/metrics_constants.proto
+++ b/proto/src/metrics_constants.proto
@@ -3466,6 +3466,12 @@ message MetricsEvent {
     // OS: O
     ENCRYPTION_AND_CREDENTIAL = 846;
 
+    // ACTION: Settings > About device > Build number
+    ACTION_SETTINGS_BUILD_NUMBER_PREF = 847;
+
+    // FIELD: Whether developer mode has already been enabled when clicking build number preference
+    FIELD_SETTINGS_BUILD_NUMBER_DEVELOPER_MODE_ENABLED = 848;
+
     // ---- End O Constants, all O constants go above this line ----
 
     // Add new aosp constants above this line.