diff --git a/ai/functions/function.go b/ai/functions/function.go
index 399c255..487236c 100644
--- a/ai/functions/function.go
+++ b/ai/functions/function.go
@@ -1,21 +1,21 @@
 package functions
 
 import (
-	"github.com/JunNishimura/Chatify/util"
+	"github.com/JunNishimura/Chatify/utils"
 )
 
-func SetGenres(genresInfo *util.Info[[]string], value []string) {
-	util.SetInfo(genresInfo, value)
+func SetGenres(genresInfo *utils.Info[[]string], value []string) {
+	utils.SetInfo(genresInfo, value)
 }
 
-func SetDanceability(danceabilityInfo *util.Info[float64], value float64) {
-	util.SetInfo(danceabilityInfo, value)
+func SetDanceability(danceabilityInfo *utils.Info[float64], value float64) {
+	utils.SetInfo(danceabilityInfo, value)
 }
 
-func SetValence(valence *util.Info[float64], value float64) {
-	util.SetInfo(valence, value)
+func SetValence(valence *utils.Info[float64], value float64) {
+	utils.SetInfo(valence, value)
 }
 
-func SetPopularity(popularity *util.Info[int], value int) {
-	util.SetInfo(popularity, value)
+func SetPopularity(popularity *utils.Info[int], value int) {
+	utils.SetInfo(popularity, value)
 }
diff --git a/ai/model/user.go b/ai/model/user.go
index 13a5615..3a84dc9 100644
--- a/ai/model/user.go
+++ b/ai/model/user.go
@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"strings"
 
-	"github.com/JunNishimura/Chatify/util"
+	"github.com/JunNishimura/Chatify/utils"
 )
 
 type User struct {
@@ -29,27 +29,27 @@ const (
 )
 
 type MusicOrientation struct {
-	Genres       util.Info[[]string]
-	Danceability util.Info[float64]
-	Valence      util.Info[float64]
-	Popularity   util.Info[int]
+	Genres       utils.Info[[]string]
+	Danceability utils.Info[float64]
+	Valence      utils.Info[float64]
+	Popularity   utils.Info[int]
 }
 
 func newMusicOrientation() *MusicOrientation {
 	return &MusicOrientation{
-		Genres: util.Info[[]string]{
+		Genres: utils.Info[[]string]{
 			Value:      []string{},
 			HasChanged: false,
 		},
-		Danceability: util.Info[float64]{
+		Danceability: utils.Info[float64]{
 			Value:      0.0,
 			HasChanged: false,
 		},
-		Valence: util.Info[float64]{
+		Valence: utils.Info[float64]{
 			Value:      0.0,
 			HasChanged: false,
 		},
-		Popularity: util.Info[int]{
+		Popularity: utils.Info[int]{
 			Value:      0,
 			HasChanged: false,
 		},
diff --git a/util/info.go b/utils/info.go
similarity index 90%
rename from util/info.go
rename to utils/info.go
index c31d644..e75cb70 100644
--- a/util/info.go
+++ b/utils/info.go
@@ -1,4 +1,4 @@
-package util
+package utils
 
 type Info[T any] struct {
 	Value      T