diff --git a/packages/node_modules/node-red/settings.js b/packages/node_modules/node-red/settings.js
index c5e4355e1..8be7bf9bd 100644
--- a/packages/node_modules/node-red/settings.js
+++ b/packages/node_modules/node-red/settings.js
@@ -139,13 +139,24 @@ module.exports = {
     // The following property can be used to enable HTTPS
     // See http://nodejs.org/api/https.html#https_https_createserver_options_requestlistener
     // for details on its contents.
-    // See the comment at the top of this file on how to load the `fs` module used by
-    // this setting.
-    //
+    // See the comment at the top of this file on how to load the `fs` module used by this setting.
+    // This property can be an object, containing both a (private) key and a (public) certificate:
     //https: {
-    //    key: fs.readFileSync('privatekey.pem'),
-    //    cert: fs.readFileSync('certificate.pem')
+    //  key: fs.readFileSync('privkey.pem'),
+    //  cert: fs.readFileSync('cert.pem')
     //},
+    // This property can also be a function (e.g. to automatic refresh the https settings):
+    //https: function() {
+    //     return {
+    //         key: fs.readFileSync('privkey.pem'),
+    //         cert: fs.readFileSync('cert.pem')
+    //     }
+    //},
+
+    // The following property can be used to refresh the https settings at regular time intervals (seconds).
+    // Prerequisite: the 'https' property should be enabled (based on a function)!
+    // Caution: NodeJs version 11 or above is required to use this option!
+    //httpsRefreshInterval : 3600,
 
     // The following property can be used to cause insecure HTTP connections to
     // be redirected to HTTPS.