diff --git a/conv.go b/conv.go
index 227657e..db588e3 100644
--- a/conv.go
+++ b/conv.go
@@ -8,8 +8,6 @@ import (
 	"reflect"
 	"strconv"
 	"strings"
-
-	"golang.org/x/exp/constraints"
 )
 
 // 抛出一个类型无法转换的错误
@@ -84,7 +82,7 @@ func MustBool(val any, def ...bool) bool {
 }
 
 // IntOf 转换成指定类型的符号整数
-func IntOf[T constraints.Signed](val any) (T, error) {
+func IntOf[T Signed](val any) (T, error) {
 	ret, err := toInt64(val)
 	if err != nil {
 		return 1, err
@@ -95,7 +93,7 @@ func IntOf[T constraints.Signed](val any) (T, error) {
 // UintOf 转换成指定类型的无符号整数
 //
 // 将一个有符号整数转换成无符号整数，负数将返回错误，正数和零正常转换
-func UintOf[T constraints.Unsigned](val any) (T, error) {
+func UintOf[T Unsigned](val any) (T, error) {
 	ret, err := toUint64(val)
 	if err != nil {
 		return 0, err
@@ -492,7 +490,7 @@ func toUint64(val any) (uint64, error) {
 }
 
 // MustIntOf 将 val 转换成 T 类型或是在无法转换的情况下返回 def 参数
-func MustIntOf[T constraints.Signed](val any, def ...T) T {
+func MustIntOf[T Signed](val any, def ...T) T {
 	if ret, err := IntOf[T](val); err == nil {
 		return ret
 	}
@@ -500,7 +498,7 @@ func MustIntOf[T constraints.Signed](val any, def ...T) T {
 }
 
 // MustUintOf 将 val 转换成 T 类型或是在无法转换的情况下返回 def 参数
-func MustUintOf[T constraints.Unsigned](val any, def ...T) T {
+func MustUintOf[T Unsigned](val any, def ...T) T {
 	if ret, err := UintOf[T](val); err == nil {
 		return ret
 	}
diff --git a/go.mod b/go.mod
index 0649151..1bd52c6 100644
--- a/go.mod
+++ b/go.mod
@@ -2,6 +2,4 @@ module github.com/issue9/conv
 
 require github.com/issue9/assert/v3 v3.0.4
 
-require golang.org/x/exp v0.0.0-20230212135524-a684f29349b6
-
 go 1.18
diff --git a/go.sum b/go.sum
index 7399e3b..2ba59f3 100644
--- a/go.sum
+++ b/go.sum
@@ -1,4 +1,2 @@
 github.com/issue9/assert/v3 v3.0.4 h1:WsYZQ6PQmM/pGFrbkn5GIXjWeVZHv+wcl2829UTX1Qc=
 github.com/issue9/assert/v3 v3.0.4/go.mod h1:yft/uaskRpwQTyBT3n1zRl91SR1wNlO4fLZHzOa4bdM=
-golang.org/x/exp v0.0.0-20230212135524-a684f29349b6 h1:Ic9KukPQ7PegFzHckNiMTQXGgEszA7mY2Fn4ZMtnMbw=
-golang.org/x/exp v0.0.0-20230212135524-a684f29349b6/go.mod h1:CxIveKay+FTh1D0yPZemJVgC/95VzuuOLq5Qi4xnoYc=
diff --git a/types.go b/types.go
new file mode 100644
index 0000000..63d4feb
--- /dev/null
+++ b/types.go
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: MIT
+
+package conv
+
+type Signed interface {
+	~int | ~int8 | ~int16 | ~int32 | ~int64
+}
+
+type Unsigned interface {
+	~uint | ~uint8 | ~uint16 | ~uint32 | ~uint64 | ~uintptr
+}