diff --git a/app/config-default.js b/app/config-default.js
index 2f927627..440faaeb 100644
--- a/app/config-default.js
+++ b/app/config-default.js
@@ -1,3 +1,7 @@
+// Future versions of Hyper may add additional config options,
+// which will not automatically be merged into this file.
+// See https://hyper.is#cfg for all currently supported options.
+
 module.exports = {
   config: {
     // default font size in pixels for all tabs