diff --git a/pkg/device/docs/env-vars.html b/pkg/device/docs/env-vars.html
index e54bcd9..caccb5b 100644
--- a/pkg/device/docs/env-vars.html
+++ b/pkg/device/docs/env-vars.html
@@ -62,6 +62,14 @@ <h3 id="DEVICES_FILE">DEVICES_FILE</h3>
 	hub defaults to reading 'devices.json'.</p>
 </div>
 
+<div>
+	<h3 id="AUTO_SAVE">AUTO_SAVE</h3>
+	<p>AUTO_SAVE set to "true" will automatically save device changes to
+	the devices.json file.  Only applicable if DEVICES environment variable
+	is not defined.  If AUTO_SAVE is set to "false", user must manually
+	save device changes.<p>
+</div>
+
 <div>
 	<h3 id="USER">USER</h3>
 	<p>Username for authentication.  If non-blank, a new client session