diff --git a/go.mod b/go.mod
index 47df3e8..baa2731 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,3 @@
 module git.apinb.com/bsm-sdk/engine
 
-go 1.21
+go 1.22
diff --git a/utils/random.go b/utils/random.go
index a84416a..6a28462 100644
--- a/utils/random.go
+++ b/utils/random.go
@@ -1,11 +1,11 @@
 package utils
 
 import (
-	"math/rand"
+	"math/rand/v2"
 	"time"
 )
 
-//随机生成字符串
+// 随机生成字符串
 func RandomString(l int) string {
 	str := "0123456789AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz"
 	bytes := []byte(str)
@@ -17,7 +17,7 @@ func RandomString(l int) string {
 	return BytesToString(result)
 }
 
-//随机生成纯字符串
+// 随机生成纯字符串
 func RandomPureString(l int) string {
 	str := "AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz"
 	bytes := []byte(str)
@@ -29,7 +29,7 @@ func RandomPureString(l int) string {
 	return BytesToString(result)
 }
 
-//随机生成数字字符串
+// 随机生成数字字符串
 func RandomNumber(l int) string {
 	str := "0123456789"
 	bytes := []byte(str)