diff --git a/cmds/statsd/src/atoms.proto b/cmds/statsd/src/atoms.proto
index d9fa0f13f5bff..68b6522138c7d 100644
--- a/cmds/statsd/src/atoms.proto
+++ b/cmds/statsd/src/atoms.proto
@@ -1640,6 +1640,9 @@ message LmkKillOccurred {
 
     // SWAP
     optional int64 swap_in_bytes = 8;
+
+    // The elapsed real time of start of the process.
+    optional int64 process_start_time_nanos = 9;
 }
 
 /*