diff --git a/.env.example b/.env.example
index 5876f607..9f720487 100644
--- a/.env.example
+++ b/.env.example
@@ -17,7 +17,7 @@ BARD_SECURE_1PSIDTS=
 
 # CHAT_MODEL option: OFFICIAL, UNOFFICIAL, Bard, Bing
 CHAT_MODEL=OFFICIAL
-# GPT_ENGINE option: gpt-3.5-turbo, gpt-4
+# GPT_ENGINE option: ['gpt-3.5-turbo', 'gpt-3.5-turbo-16k', 'gpt-3.5-turbo-0301', 'gpt-3.5-turbo-0613', 'gpt-3.5-turbo-16k-0613', 'gpt-4', 'gpt-4-0314', 'gpt-4-32k', 'gpt-4-32k-0314', 'gpt-4-0613', 'gpt-4-32k-0613']
 GPT_ENGINE=gpt-3.5-turbo
 LOGGING=True
 REPLYING_ALL=False