diff --git a/adapter/outbound/socks5.go b/adapter/outbound/socks5.go
index 1402c618..d9739557 100644
--- a/adapter/outbound/socks5.go
+++ b/adapter/outbound/socks5.go
@@ -6,7 +6,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net"
 	"strconv"
 
@@ -116,7 +115,7 @@ func (ss *Socks5) DialUDP(metadata *C.Metadata) (_ C.PacketConn, err error) {
 	}
 
 	go func() {
-		io.Copy(ioutil.Discard, c)
+		io.Copy(io.Discard, c)
 		c.Close()
 		// A UDP association terminates when the TCP connection that the UDP
 		// ASSOCIATE request arrived on terminates. RFC1928
diff --git a/adapter/provider/fetcher.go b/adapter/provider/fetcher.go
index 777e3aa5..d3c85ab5 100644
--- a/adapter/provider/fetcher.go
+++ b/adapter/provider/fetcher.go
@@ -3,7 +3,6 @@ package provider
 import (
 	"bytes"
 	"crypto/md5"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"time"
@@ -45,7 +44,7 @@ func (f *fetcher) Initial() (interface{}, error) {
 		isLocal bool
 	)
 	if stat, fErr := os.Stat(f.vehicle.Path()); fErr == nil {
-		buf, err = ioutil.ReadFile(f.vehicle.Path())
+		buf, err = os.ReadFile(f.vehicle.Path())
 		modTime := stat.ModTime()
 		f.updatedAt = &modTime
 		isLocal = true
@@ -165,7 +164,7 @@ func safeWrite(path string, buf []byte) error {
 		}
 	}
 
-	return ioutil.WriteFile(path, buf, fileMode)
+	return os.WriteFile(path, buf, fileMode)
 }
 
 func newFetcher(name string, interval time.Duration, vehicle types.Vehicle, parser parser, onUpdate func(interface{})) *fetcher {
diff --git a/adapter/provider/vehicle.go b/adapter/provider/vehicle.go
index f556e69c..4f08c317 100644
--- a/adapter/provider/vehicle.go
+++ b/adapter/provider/vehicle.go
@@ -2,10 +2,11 @@ package provider
 
 import (
 	"context"
-	"io/ioutil"
+	"io"
 	"net"
 	"net/http"
 	"net/url"
+	"os"
 	"time"
 
 	"github.com/Dreamacro/clash/component/dialer"
@@ -25,7 +26,7 @@ func (f *FileVehicle) Path() string {
 }
 
 func (f *FileVehicle) Read() ([]byte, error) {
-	return ioutil.ReadFile(f.path)
+	return os.ReadFile(f.path)
 }
 
 func NewFileVehicle(path string) *FileVehicle {
@@ -84,7 +85,7 @@ func (h *HTTPVehicle) Read() ([]byte, error) {
 	}
 	defer resp.Body.Close()
 
-	buf, err := ioutil.ReadAll(resp.Body)
+	buf, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, err
 	}
diff --git a/component/process/process_linux.go b/component/process/process_linux.go
index fabe969c..f77c1059 100644
--- a/component/process/process_linux.go
+++ b/component/process/process_linux.go
@@ -5,8 +5,8 @@ import (
 	"encoding/binary"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net"
+	"os"
 	"path"
 	"path/filepath"
 	"syscall"
@@ -167,7 +167,7 @@ func unpackSocketDiagResponse(msg *syscall.NetlinkMessage) (inode, uid uint32) {
 }
 
 func resolveProcessNameByProcSearch(inode, uid int) (string, error) {
-	files, err := ioutil.ReadDir(pathProc)
+	files, err := os.ReadDir(pathProc)
 	if err != nil {
 		return "", err
 	}
@@ -180,14 +180,18 @@ func resolveProcessNameByProcSearch(inode, uid int) (string, error) {
 			continue
 		}
 
-		if f.Sys().(*syscall.Stat_t).Uid != uint32(uid) {
+		info, err := f.Info()
+		if err != nil {
+			return "", err
+		}
+		if info.Sys().(*syscall.Stat_t).Uid != uint32(uid) {
 			continue
 		}
 
 		processPath := path.Join(pathProc, f.Name())
 		fdPath := path.Join(processPath, "fd")
 
-		fds, err := ioutil.ReadDir(fdPath)
+		fds, err := os.ReadDir(fdPath)
 		if err != nil {
 			continue
 		}
@@ -199,7 +203,7 @@ func resolveProcessNameByProcSearch(inode, uid int) (string, error) {
 			}
 
 			if bytes.Equal(buffer[:n], socket) {
-				cmdline, err := ioutil.ReadFile(path.Join(processPath, "cmdline"))
+				cmdline, err := os.ReadFile(path.Join(processPath, "cmdline"))
 				if err != nil {
 					return "", err
 				}
diff --git a/component/profile/cachefile/cache.go b/component/profile/cachefile/cache.go
index 28b05ee0..a9d1bc5b 100644
--- a/component/profile/cachefile/cache.go
+++ b/component/profile/cachefile/cache.go
@@ -3,7 +3,6 @@ package cachefile
 import (
 	"bytes"
 	"encoding/gob"
-	"io/ioutil"
 	"os"
 	"sync"
 	"time"
@@ -88,7 +87,7 @@ func migrateCache() {
 		}
 	}()
 
-	buf, err := ioutil.ReadFile(C.Path.OldCache())
+	buf, err := os.ReadFile(C.Path.OldCache())
 	if err != nil {
 		return
 	}
diff --git a/dns/doh.go b/dns/doh.go
index 53b0fb33..3daa7f22 100644
--- a/dns/doh.go
+++ b/dns/doh.go
@@ -3,7 +3,7 @@ package dns
 import (
 	"bytes"
 	"context"
-	"io/ioutil"
+	"io"
 	"net"
 	"net/http"
 
@@ -68,7 +68,7 @@ func (dc *dohClient) doRequest(req *http.Request) (msg *D.Msg, err error) {
 	}
 	defer resp.Body.Close()
 
-	buf, err := ioutil.ReadAll(resp.Body)
+	buf, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, err
 	}
diff --git a/hub/executor/executor.go b/hub/executor/executor.go
index 5c002b64..2147906f 100644
--- a/hub/executor/executor.go
+++ b/hub/executor/executor.go
@@ -2,7 +2,6 @@ package executor
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"sync"
 
@@ -33,7 +32,7 @@ func readConfig(path string) ([]byte, error) {
 	if _, err := os.Stat(path); os.IsNotExist(err) {
 		return nil, err
 	}
-	data, err := ioutil.ReadFile(path)
+	data, err := os.ReadFile(path)
 	if err != nil {
 		return nil, err
 	}
diff --git a/listener/socks/tcp.go b/listener/socks/tcp.go
index 49d0a1e3..29016f5b 100644
--- a/listener/socks/tcp.go
+++ b/listener/socks/tcp.go
@@ -2,7 +2,6 @@ package socks
 
 import (
 	"io"
-	"io/ioutil"
 	"net"
 
 	"github.com/Dreamacro/clash/adapter/inbound"
@@ -102,7 +101,7 @@ func HandleSocks5(conn net.Conn, in chan<- C.ConnContext) {
 	}
 	if command == socks5.CmdUDPAssociate {
 		defer conn.Close()
-		io.Copy(ioutil.Discard, conn)
+		io.Copy(io.Discard, conn)
 		return
 	}
 	in <- inbound.NewSocket(target, conn, C.SOCKS5)