diff --git a/packages/backend-test-utils/package.json b/packages/backend-test-utils/package.json
index ae96f17b8e..725be0d905 100644
--- a/packages/backend-test-utils/package.json
+++ b/packages/backend-test-utils/package.json
@@ -39,6 +39,7 @@
     "@backstage/backend-plugin-api": "workspace:^",
     "@backstage/cli": "workspace:^",
     "@backstage/config": "workspace:^",
+    "@backstage/types": "workspace:^",
     "better-sqlite3": "^8.0.0",
     "express": "^4.17.1",
     "express-promise-router": "^4.1.0",
diff --git a/packages/backend-test-utils/src/next/implementations/mockConfigService.ts b/packages/backend-test-utils/src/next/implementations/mockConfigService.ts
index 976167b473..78a670585d 100644
--- a/packages/backend-test-utils/src/next/implementations/mockConfigService.ts
+++ b/packages/backend-test-utils/src/next/implementations/mockConfigService.ts
@@ -18,13 +18,14 @@ import {
   coreServices,
   createServiceFactory,
 } from '@backstage/backend-plugin-api';
-import { AppConfig, ConfigReader } from '@backstage/config';
+import { ConfigReader } from '@backstage/config';
+import { JsonObject } from '@backstage/types';
 
 /** @public */
 export const mockConfigFactory = createServiceFactory({
   service: coreServices.config,
   deps: {},
-  async factory(_, options?: { config?: AppConfig }) {
-    return new ConfigReader(options?.config);
+  async factory(_, options?: { data?: JsonObject }) {
+    return new ConfigReader(options?.data, 'mock-config');
   },
 });
diff --git a/yarn.lock b/yarn.lock
index f8957bfc35..f973dee489 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3558,6 +3558,7 @@ __metadata:
     "@backstage/backend-plugin-api": "workspace:^"
     "@backstage/cli": "workspace:^"
     "@backstage/config": "workspace:^"
+    "@backstage/types": "workspace:^"
     "@types/supertest": ^2.0.8
     better-sqlite3: ^8.0.0
     express: ^4.17.1