diff --git a/meshtastic/portnums.proto b/meshtastic/portnums.proto
index 4f546cb..3332a60 100644
--- a/meshtastic/portnums.proto
+++ b/meshtastic/portnums.proto
@@ -99,6 +99,11 @@ enum PortNum {
    */
   AUDIO_APP = 9;
 
+  /*
+   * Same as Text Message but originating from Detection Sensor Module.
+   */
+  DETECTION_SENSOR_APP = 10;
+
   /*
    * Provides a 'ping' service that replies to any packet it receives.
    * Also serves as a small example module.
@@ -189,4 +194,4 @@ enum PortNum {
    * Currently we limit port nums to no higher than this value
    */
   MAX = 511;
-}
+}
\ No newline at end of file