diff --git a/src/domains/services/archiver.service.ts b/src/domains/services/archiver.service.ts
index 635d1a21..111fcc2a 100644
--- a/src/domains/services/archiver.service.ts
+++ b/src/domains/services/archiver.service.ts
@@ -27,10 +27,11 @@ export class ArchiverService {
 
   public appendAsyncAPIDocument(
     archive: Archiver,
-    asyncapi: string,
+    asyncapi: string | object,
     fileName = 'asyncapi',
   ) {
-    asyncapi = JSON.stringify(asyncapi);
+    const content =
+      typeof asyncapi === 'string' ? asyncapi : JSON.stringify(asyncapi);
     const language = retrieveLangauge(asyncapi);
     if (language === 'yaml') {
       archive.append(asyncapi, { name: `${fileName}.yml` });