diff --git a/.changeset/two-crabs-call.md b/.changeset/two-crabs-call.md
new file mode 100644
index 0000000000..8f6979fac4
--- /dev/null
+++ b/.changeset/two-crabs-call.md
@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-devtools-backend': patch
+---
+
+Deprecated `createRouter` and its router options in favour of the new backend system.
diff --git a/plugins/devtools-backend/api-report.md b/plugins/devtools-backend/api-report.md
index 482422e66f..835eb23e26 100644
--- a/plugins/devtools-backend/api-report.md
+++ b/plugins/devtools-backend/api-report.md
@@ -13,8 +13,9 @@ import { ExternalDependency } from '@backstage/plugin-devtools-common';
 import { HttpAuthService } from '@backstage/backend-plugin-api';
 import { LoggerService } from '@backstage/backend-plugin-api';
 import { PermissionsService } from '@backstage/backend-plugin-api';
+import { RootConfigService } from '@backstage/backend-plugin-api';
 
-// @public (undocumented)
+// @public @deprecated (undocumented)
 export function createRouter(options: RouterOptions): Promise<express.Router>;
 
 // @public (undocumented)
@@ -32,10 +33,10 @@ export class DevToolsBackendApi {
 const devtoolsPlugin: BackendFeatureCompat;
 export default devtoolsPlugin;
 
-// @public (undocumented)
+// @public @deprecated (undocumented)
 export interface RouterOptions {
   // (undocumented)
-  config: Config;
+  config: RootConfigService;
   // (undocumented)
   devToolsBackendApi?: DevToolsBackendApi;
   // (undocumented)
diff --git a/plugins/devtools-backend/src/service/router.ts b/plugins/devtools-backend/src/service/router.ts
index cec3d87a5a..e3eb72c293 100644
--- a/plugins/devtools-backend/src/service/router.ts
+++ b/plugins/devtools-backend/src/service/router.ts
@@ -21,7 +21,6 @@ import {
   devToolsPermissions,
 } from '@backstage/plugin-devtools-common';
 
-import { Config } from '@backstage/config';
 import { DevToolsBackendApi } from '../api';
 import { NotAllowedError } from '@backstage/errors';
 import Router from 'express-promise-router';
@@ -36,19 +35,26 @@ import {
   HttpAuthService,
   LoggerService,
   PermissionsService,
+  RootConfigService,
 } from '@backstage/backend-plugin-api';
 
-/** @public */
+/**
+ * @public
+ * @deprecated Please migrate to the new backend system as this will be removed in the future.
+ */
 export interface RouterOptions {
   devToolsBackendApi?: DevToolsBackendApi;
   logger: LoggerService;
-  config: Config;
+  config: RootConfigService;
   permissions: PermissionsService;
   discovery: DiscoveryService;
   httpAuth?: HttpAuthService;
 }
 
-/** @public */
+/**
+ * @deprecated Please migrate to the new backend system as this will be removed in the future.
+ * @public
+ * */
 export async function createRouter(
   options: RouterOptions,
 ): Promise<express.Router> {