diff --git a/vendor/golang.org/x/sys/unix/syscall_darwin_amd64.go b/vendor/golang.org/x/sys/unix/syscall_darwin_amd64.go
index ce2e0d2..b37310c 100644
--- a/vendor/golang.org/x/sys/unix/syscall_darwin_amd64.go
+++ b/vendor/golang.org/x/sys/unix/syscall_darwin_amd64.go
@@ -2,15 +2,12 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build amd64 && darwin
 // +build amd64,darwin
 
 package unix
 
-import (
-	"syscall"
-)
-
-//sys   ptrace(request int, pid int, addr uintptr, data uintptr) (err error)
+import "syscall"
 
 func setTimespec(sec, nsec int64) Timespec {
 	return Timespec{Sec: sec, Nsec: nsec}
@@ -44,14 +41,11 @@
 
 func Syscall9(num, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno)
 
-// SYS___SYSCTL is used by syscall_bsd.go for all BSDs, but in modern versions
-// of darwin/amd64 the syscall is called sysctl instead of __sysctl.
-const SYS___SYSCTL = SYS_SYSCTL
-
 //sys	Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64
 //sys	Fstatat(fd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64
 //sys	Fstatfs(fd int, stat *Statfs_t) (err error) = SYS_FSTATFS64
 //sys	getfsstat(buf unsafe.Pointer, size uintptr, flags int) (n int, err error) = SYS_GETFSSTAT64
 //sys	Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64
+//sys	ptrace1(request int, pid int, addr uintptr, data uintptr) (err error) = SYS_ptrace
 //sys	Stat(path string, stat *Stat_t) (err error) = SYS_STAT64
 //sys	Statfs(path string, stat *Statfs_t) (err error) = SYS_STATFS64