diff --git a/meshtastic/mesh.proto b/meshtastic/mesh.proto
index e69e064e..593f411f 100644
--- a/meshtastic/mesh.proto
+++ b/meshtastic/mesh.proto
@@ -435,6 +435,11 @@ enum HardwareModel {
    * Heltec HT-CT62 with ESP32-C3 CPU and SX1262 LoRa
    */
   HELTEC_HT62 = 53;
+
+  /*
+   * E22-900M series modules with ESP32-S3
+   */
+  E22_900M_S3 = 54;
   
   /*
    * ------------------------------------------------------------------------------------------------------------------------------------------
@@ -1476,4 +1481,4 @@ message DeviceMetadata {
    * Has Remote Hardware enabled
    */
   bool hasRemoteHardware = 10;
-}
\ No newline at end of file
+}