diff --git a/internal/gui/tests/menu-scroll.test.cjs b/internal/gui/tests/menu-scroll.test.cjs
index 621cc239..3769f014 100644
--- a/internal/gui/tests/menu-scroll.test.cjs
+++ b/internal/gui/tests/menu-scroll.test.cjs
@@ -41,6 +41,7 @@ async function serve(route) {
   if (url.pathname === "/api/plugins/updates") return json({ waiting: [] });
   if (url.pathname === "/api/usage/quotas" || url.pathname === "/api/usage/quotas/history" || url.pathname === "/api/agents/install") return json([]);
   if (url.pathname === "/api/whatsnew") return json({});
+  if (url.pathname === "/api/upstream") return json({ vendors: [], providers: {} });
   assert(!url.pathname.startsWith("/api/"), "Unexpected API: " + url.pathname);
   const file = path.join(assets, url.pathname === "/" ? "index.html" : url.pathname);
   const contentType = { ".html": "text/html", ".js": "text/javascript", ".css": "text/css", ".svg": "image/svg+xml", ".png": "image/png" }[path.extname(file)];