diff --git a/inventories/default.nix b/inventories/default.nix
index 81205f7..dded88a 100644
--- a/inventories/default.nix
+++ b/inventories/default.nix
@@ -384,8 +384,7 @@
                           name = "matrix";
                           webhook_configs = [
                             {
-                              url = "http://localhost:3000/alerts?secret=$$KUROIRIS_SECRET";
-                              # url_file = "";
+                              url_file = config.clan.core.vars.generator.prometheus.files.matrix-alertmanager-urlfile.path;
                               send_resolved = true;
                             }
                           ];