diff --git a/calibre_web/config.json b/calibre_web/config.json
index de6444450..790f871c2 100644
--- a/calibre_web/config.json
+++ b/calibre_web/config.json
@@ -81,7 +81,8 @@
     "cifspassword": "str?",
     "cifsusername": "str?",
     "localdisks": "str?",
-    "networkdisks": "str?"
+    "networkdisks": "str?",
+    "force_https": "bool?"
   },
   "slug": "calibre-web",
   "url": "https://github.com/alexbelgium/hassio-addons/tree/master/calibre-web",