diff --git a/README.md b/README.md
index fd7a355..80f4a46 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ You will need to provide the following arguments to the build command:
 docker build -t telegram-chatgpt-bot . \
   --build-arg OPENAI_TOKEN=<required, your_api_token> \
   --build-arg BOT_TOKEN=<required, your_bot_token> \
-  --build-arg CHATGPT_VERSION=<optional, 3.5 | 4> 
+  --build-arg CHAT_MODEL=<optional, defaults to 'gpt-3.5-turbo-1106'> 
 ```
 
 You can also run the bot locally
diff --git a/internal/config/config.go b/internal/config/config.go
index e53bc78..21c7068 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -12,7 +12,7 @@ type Config struct {
 	TelegramAPIToken string `env:"BOT_TOKEN,required"`
 	OpenAIToken      string `env:"OPENAI_TOKEN,required"`
 	DefaultLanguage  string `env:"LANG,default=en"`
-	ChatGPTVersion   string `env:"CHATGPT_VERSION,default=3.5"`
+	ChatModel        string `env:"CHAT_MODEL,default=gpt-3.5-turbo-1106"`
 }
 
 var (
diff --git a/internal/handlers/private.go b/internal/handlers/private.go
index 74aab8f..d62a2f2 100644
--- a/internal/handlers/private.go
+++ b/internal/handlers/private.go
@@ -105,13 +105,6 @@ func apiRequestRoutine(
 	const (
 		chatGPT4 = "4"
 	)
-	var modelVersion string
-	switch config.Get().ChatGPTVersion {
-	case chatGPT4:
-		modelVersion = openai.GPT4
-	default:
-		modelVersion = openai.GPT3Dot5Turbo
-	}
 
 	instruction := openai.ChatCompletionMessage{
 		Role: "system",
@@ -160,7 +153,7 @@ func apiRequestRoutine(
 	resp, err := openaiClient.CreateChatCompletion(
 		context.Background(),
 		openai.ChatCompletionRequest{
-			Model:            modelVersion,
+			Model:            config.Get().ChatModel,
 			Messages:         append([]openai.ChatCompletionMessage{instruction}, chatHistory...),
 			MaxTokens:        openAIMaxTokens,
 			Temperature:      openAITemperature,