diff --git a/inventories/default.nix b/inventories/default.nix
index a878bca..81ca2cb 100644
--- a/inventories/default.nix
+++ b/inventories/default.nix
@@ -383,7 +383,13 @@
                         name = "matrix";
                         webhook_configs = [
                           {
-                            url = "http://localhost:3000";
+                            url = "http://localhost:3000/alerts";
+                            http_config = {
+                              basic_auth = {
+                                username = "kuroiris";
+                                password = "$${KUROIRIS_PASSWORD}";
+                              };
+                            };
                             send_resolved = true;
                           }
                         ];