diff --git a/jsr.json b/jsr.json
index 5d5d953..6e45db0 100644
--- a/jsr.json
+++ b/jsr.json
@@ -1,5 +1,5 @@
 {
   "name": "@jigsawstack/jigsawstack",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "exports": "./index.ts"
 }
diff --git a/package.json b/package.json
index 92e089f..5516768 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "keywords": ["framework", "ai", "nextjs", "react"],
   "type": "module",
   "license": "MIT",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "homepage": "https://jigsawstack.com",
   "repository": {
     "type": "git",
diff --git a/src/audio/interfaces.ts b/src/audio/interfaces.ts
index 06612ff..9d2b5f1 100644
--- a/src/audio/interfaces.ts
+++ b/src/audio/interfaces.ts
@@ -31,8 +31,10 @@ export interface SpeechToTextResponse extends BaseResponse {
     timestamp: number[];
     text: string;
   }>;
-  language_detected?: string; // only available if language is auto
-  confidence?: number; // only available if language is auto
+  language_detected?: {
+    code?: string;
+    confidence?: number;
+  }; // only available if language is auto
 }
 
 export interface SpeechToTextWebhookResponse extends BaseResponse {