diff --git a/packages/core-api/src/app/types.ts b/packages/core-api/src/app/types.ts
index 373839d308..69eb7f7189 100644
--- a/packages/core-api/src/app/types.ts
+++ b/packages/core-api/src/app/types.ts
@@ -187,6 +187,8 @@ export type BackstageApp = {
 
   /**
    * Routes component that contains all routes for plugin pages in the app.
+   *
+   * @deprecated Registering routes in plugins is deprecated and this method will be removed.
    */
   getRoutes(): JSX.Element[];
 };