diff --git a/llm/anthropic.go b/llm/anthropic.go
index 568b075..a3ab799 100644
--- a/llm/anthropic.go
+++ b/llm/anthropic.go
@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"time"
 )
@@ -179,7 +179,7 @@ func (c *AnthropicClient) Generate(
 	defer resp.Body.Close()
 
 	if resp.StatusCode >= 400 {
-		b, _ := ioutil.ReadAll(resp.Body)
+		b, _ := io.ReadAll(resp.Body)
 		return nil, fmt.Errorf("Anthropic Error %d: %s", resp.StatusCode, string(b))
 	}
 
diff --git a/llm/commom.go b/llm/commom.go
index b50c64a..8026a8f 100644
--- a/llm/commom.go
+++ b/llm/commom.go
@@ -3,7 +3,6 @@ package llm
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"math/rand"
 	"os"
 	"path/filepath"
@@ -270,11 +269,11 @@ func (h *MessageHistory) SaveToFile(filename string) error {
 	if err := os.MkdirAll(dir, 0755); err != nil {
 		return err
 	}
-	return ioutil.WriteFile(filename, data, 0644)
+	return os.WriteFile(filename, data, 0644)
 }
 
 func (h *MessageHistory) LoadFromFile(filename string) error {
-	data, err := ioutil.ReadFile(filename)
+	data, err := os.ReadFile(filename)
 	if err != nil {
 		return err
 	}
diff --git a/llm/gemini.go b/llm/gemini.go
index 86fba24..ef66529 100644
--- a/llm/gemini.go
+++ b/llm/gemini.go
@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"time"
 )
@@ -152,7 +152,7 @@ func (c *GeminiClient) Generate(
 	defer resp.Body.Close()
 
 	if resp.StatusCode >= 400 {
-		b, _ := ioutil.ReadAll(resp.Body)
+		b, _ := io.ReadAll(resp.Body)
 		return nil, fmt.Errorf("Gemini Error %d: %s", resp.StatusCode, string(b))
 	}
 
diff --git a/llm/openai.go b/llm/openai.go
index f113a16..17b1771 100644
--- a/llm/openai.go
+++ b/llm/openai.go
@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
 	"time"
@@ -240,7 +240,7 @@ func (c *OpenAIClient) Generate(
 	defer resp.Body.Close()
 
 	if resp.StatusCode >= 400 {
-		body, _ := ioutil.ReadAll(resp.Body)
+		body, _ := io.ReadAll(resp.Body)
 		return nil, fmt.Errorf("OpenAI API error: %d - %s", resp.StatusCode, string(body))
 	}