diff --git a/packages/vue-server-renderer/types/index.d.ts b/packages/vue-server-renderer/types/index.d.ts
index e6c8d62dde9..9b5150a192d 100644
--- a/packages/vue-server-renderer/types/index.d.ts
+++ b/packages/vue-server-renderer/types/index.d.ts
@@ -18,6 +18,7 @@ interface Renderer {
 interface BundleRenderer {
   renderToString(callback: RenderCallback): void;
   renderToString(context: object, callback: RenderCallback): void;
+  renderToString(context: object): Promise<string>;
 
   renderToStream(context?: object): Readable;
 }