diff --git a/webapp.nix b/webapp.nix
index 87e220c..c2facd8 100644
--- a/webapp.nix
+++ b/webapp.nix
@@ -69,7 +69,7 @@ let
     # When unset (empty string), the corresponding chakra renders ghosted
     # (non-link) — useful for hosts that don't deploy a given module.
     VITE_HUB_ACTIVITIES_URL = cfg.hubActivitiesUrl;
-    VITE_HUB_CASTLE_URL = cfg.hubCastleUrl;
+    VITE_HUB_LIBRA_URL = cfg.hubLibraUrl;
     VITE_HUB_WALLET_URL = cfg.hubWalletUrl;
     VITE_HUB_CHAT_URL = cfg.hubChatUrl;
     VITE_HUB_FORUM_URL = cfg.hubForumUrl;
@@ -243,11 +243,11 @@ in {
       example = "https://demo.example.com/sortir/";
       description = "URL the chakra hub's Activities tile links to";
     };
-    hubCastleUrl = lib.mkOption {
+    hubLibraUrl = lib.mkOption {
       type = lib.types.str;
       default = "";
-      example = "https://demo.example.com/castle/";
-      description = "URL the chakra hub's Castle tile links to";
+      example = "https://demo.example.com/libra/";
+      description = "URL the chakra hub's Libra tile links to";
     };
     hubWalletUrl = lib.mkOption {
       type = lib.types.str;