diff --git a/meshtastic/mesh.proto b/meshtastic/mesh.proto
index d826269..c10935c 100644
--- a/meshtastic/mesh.proto
+++ b/meshtastic/mesh.proto
@@ -1627,6 +1627,31 @@ enum CriticalErrorCode {
   FLASH_CORRUPTION_UNRECOVERABLE = 13;
 }
 
+/*
+ * Enum to indicate to clients whether this firmware is an event firmware build.
+ */
+enum EventFirmwareIndicator {
+  /*
+   * Vanilla firmware
+   */
+  VANILLA = 0;
+
+  /*
+   * Open Sauce, the maker conference held yearly in CA
+   */
+   OPEN_SAUCE = 1;
+
+  /*
+   * DEFCON, the yearly hacker conference
+   */
+   DEFCON = 2;
+
+  /*
+   * Burning Man, the yearly hippie gathering in the desert
+   */
+  BURNING_MAN = 3;
+}
+
 /*
  * Unique local debugging info for this node
  * Note: we don't include position or the user info, because that will come in the
@@ -1660,6 +1685,11 @@ message MyNodeInfo {
    * The PlatformIO environment used to build this firmware
    */
   string pio_env = 13;
+
+  /*
+   * The indicator for whether this device is running event firmware and which
+   */
+  EventFirmwareIndicator event_firmware = 14;
 }
 
 /*