diff --git a/web/wrangler.jsonc b/web/wrangler.jsonc
index 2f45c65d..b9869046 100644
--- a/web/wrangler.jsonc
+++ b/web/wrangler.jsonc
@@ -2,6 +2,7 @@
     "name": "cobalt",
     "compatibility_date": "2025-06-01",
     "assets": {
-        "directory": "./build"
+        "directory": "./build",
+        "not_found_handling": "404-page"
     }
 }