diff --git a/vendor/golang.org/x/sys/unix/syscall_openbsd_arm.go b/vendor/golang.org/x/sys/unix/syscall_openbsd_arm.go
new file mode 100644
index 0000000..1c3d26f
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/syscall_openbsd_arm.go
@@ -0,0 +1,41 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build arm,openbsd
+
+package unix
+
+func setTimespec(sec, nsec int64) Timespec {
+	return Timespec{Sec: sec, Nsec: int32(nsec)}
+}
+
+func setTimeval(sec, usec int64) Timeval {
+	return Timeval{Sec: sec, Usec: int32(usec)}
+}
+
+func SetKevent(k *Kevent_t, fd, mode, flags int) {
+	k.Ident = uint32(fd)
+	k.Filter = int16(mode)
+	k.Flags = uint16(flags)
+}
+
+func (iov *Iovec) SetLen(length int) {
+	iov.Len = uint32(length)
+}
+
+func (msghdr *Msghdr) SetControllen(length int) {
+	msghdr.Controllen = uint32(length)
+}
+
+func (msghdr *Msghdr) SetIovlen(length int) {
+	msghdr.Iovlen = uint32(length)
+}
+
+func (cmsg *Cmsghdr) SetLen(length int) {
+	cmsg.Len = uint32(length)
+}
+
+// SYS___SYSCTL is used by syscall_bsd.go for all BSDs, but in modern versions
+// of openbsd/arm the syscall is called sysctl instead of __sysctl.
+const SYS___SYSCTL = SYS_SYSCTL