diff --git a/src/chatgpt-api.ts b/src/chatgpt-api.ts
index 12b67ed..6c4e401 100644
--- a/src/chatgpt-api.ts
+++ b/src/chatgpt-api.ts
@@ -10,7 +10,7 @@ import { fetchSSE } from './fetch-sse'
 
 // NOTE: this is not a public model, but it was leaked by the ChatGPT webapp.
 // const CHATGPT_MODEL = 'text-chat-davinci-002-20230126'
-const CHATGPT_MODEL = 'text-davinci-003'
+const CHATGPT_MODEL = 'text-chat-davinci-002-20221122'
 
 const USER_LABEL_DEFAULT = 'User'
 const ASSISTANT_LABEL_DEFAULT = 'ChatGPT'