diff --git a/cereal b/cereal
index c429707aef..c73da3724d 160000
--- a/cereal
+++ b/cereal
@@ -1 +1 @@
-Subproject commit c429707aefcc960657577abc1895f88ea8adaf06
+Subproject commit c73da3724d3236b59b01edf7c1e3daabcf1ce17d
diff --git a/selfdrive/thermald/thermald.py b/selfdrive/thermald/thermald.py
index a2d63f291c..9a3931965f 100755
--- a/selfdrive/thermald/thermald.py
+++ b/selfdrive/thermald/thermald.py
@@ -402,6 +402,10 @@ def thermald_thread():
     msg.deviceState.started = started_ts is not None
     msg.deviceState.startedMonoTime = int(1e9*(started_ts or 0))
 
+    last_ping = params.get("LastAthenaPingTime")
+    if last_ping is not None:
+      msg.deviceState.lastAthenaPingTime = int(last_ping)
+
     msg.deviceState.thermalStatus = thermal_status
     pm.send("deviceState", msg)