diff --git a/webapp.nix b/webapp.nix
index 41ee2e6..c7bf631 100644
--- a/webapp.nix
+++ b/webapp.nix
@@ -66,6 +66,7 @@ let
       VITE_HUB_MARKET_URL = cfg.hubMarketUrl;
       VITE_HUB_TASKS_URL = cfg.hubTasksUrl;
       VITE_HUB_RESTAURANT_URL = cfg.hubRestaurantUrl;
+      VITE_HUB_CHATELET_URL = cfg.hubChateletUrl;
     };
   };
 
@@ -256,6 +257,12 @@ in {
       example = "https://demo.example.com/restaurant/";
       description = "URL the chakra hub's Restaurant tile links to";
     };
+    hubChateletUrl = lib.mkOption {
+      type = lib.types.str;
+      default = "";
+      example = "https://demo.example.com/chatelet/";
+      description = "URL the chakra hub's Chatelet (room booking) tile links to";
+    };
 
     enableSSL = lib.mkOption {
       type = lib.types.bool;