diff --git a/docs/backend-system/core-services/http-router.md b/docs/backend-system/core-services/http-router.md
index 5e065152a0..23304f663f 100644
--- a/docs/backend-system/core-services/http-router.md
+++ b/docs/backend-system/core-services/http-router.md
@@ -134,6 +134,7 @@ import {
   createAuthIntegrationRouter,
   createRateLimitMiddleware,
 } from '@backstage/backend-defaults/httpRouter';
+import PromiseRouter from 'express-promise-router';
 import { createServiceFactory } from '@backstage/backend-plugin-api';
 
 const backend = createBackend();