diff --git a/packages/core/scanner.ts b/packages/core/scanner.ts
index 1d9301860dc..97a78f66dea 100644
--- a/packages/core/scanner.ts
+++ b/packages/core/scanner.ts
@@ -546,7 +546,7 @@ export class DependenciesScanner {
   }
 
   private flatten<T = any>(arr: T[][]): T[] {
-    return arr.reduce((a: T[], b: T[]) => a.concat(b), []);
+    return arr.flat(1);
   }
 
   private isRequestOrTransient(scope: Scope): boolean {