diff --git a/meshtastic/mesh.options b/meshtastic/mesh.options
index 4e335d2..76c4a40 100644
--- a/meshtastic/mesh.options
+++ b/meshtastic/mesh.options
@@ -67,6 +67,7 @@
 *NeighborInfo.neighbors max_count:10
 
 *DeviceMetadata.firmware_version max_size:18
+*DeviceMetadata.hw_env max_size:40
 
 *MqttClientProxyMessage.topic max_size:60
 *MqttClientProxyMessage.data max_size:435