diff --git a/vendor.conf b/vendor.conf
index 0ab4685f..e2b519e6 100644
--- a/vendor.conf
+++ b/vendor.conf
@@ -21,5 +21,5 @@ github.com/urfave/cli d53eb991652b1d438abdd34ce4bfa3ef1539108e
 golang.org/x/sys 7ddbeae9ae08c6a06a59597f0c9edbc5ff2444ce https://github.com/golang/sys
 
 # console dependencies
-github.com/containerd/console 84eeaae905fa414d03e07bcd6c8d3f19e7cf180e
+github.com/containerd/console 2748ece16665b45a47f884001d5831ec79703880
 github.com/pkg/errors v0.8.0
diff --git a/vendor/github.com/containerd/console/tc_linux.go b/vendor/github.com/containerd/console/tc_linux.go
index 80ef2f6f..73330eb7 100644
--- a/vendor/github.com/containerd/console/tc_linux.go
+++ b/vendor/github.com/containerd/console/tc_linux.go
@@ -13,25 +13,21 @@ const (
 	cmdTcSet = unix.TCSETS
 )
 
-func ioctl(fd, flag, data uintptr) error {
-	if _, _, err := unix.Syscall(unix.SYS_IOCTL, fd, flag, data); err != 0 {
+// unlockpt unlocks the slave pseudoterminal device corresponding to the master pseudoterminal referred to by f.
+// unlockpt should be called before opening the slave side of a pty.
+func unlockpt(f *os.File) error {
+	var u int32
+	if _, _, err := unix.Syscall(unix.SYS_IOCTL, f.Fd(), unix.TIOCSPTLCK, uintptr(unsafe.Pointer(&u))); err != 0 {
 		return err
 	}
 	return nil
 }
 
-// unlockpt unlocks the slave pseudoterminal device corresponding to the master pseudoterminal referred to by f.
-// unlockpt should be called before opening the slave side of a pty.
-func unlockpt(f *os.File) error {
-	var u int32
-	return ioctl(f.Fd(), unix.TIOCSPTLCK, uintptr(unsafe.Pointer(&u)))
-}
-
 // ptsname retrieves the name of the first available pts for the given master.
 func ptsname(f *os.File) (string, error) {
-	n, err := unix.IoctlGetInt(int(f.Fd()), unix.TIOCGPTN)
-	if err != nil {
+	var u uint32
+	if _, _, err := unix.Syscall(unix.SYS_IOCTL, f.Fd(), unix.TIOCGPTN, uintptr(unsafe.Pointer(&u))); err != 0 {
 		return "", err
 	}
-	return fmt.Sprintf("/dev/pts/%d", n), nil
+	return fmt.Sprintf("/dev/pts/%d", u), nil
 }