diff --git a/usr.bin/mktemp/mktemp.1 b/usr.bin/mktemp/mktemp.1
--- a/usr.bin/mktemp/mktemp.1
+++ b/usr.bin/mktemp/mktemp.1
@@ -28,7 +28,7 @@
 .\" From: $OpenBSD: mktemp.1,v 1.8 1998/03/19 06:13:37 millert Exp $
 .\" $FreeBSD$
 .\"
-.Dd December 30, 2005
+.Dd August 4, 2022
 .Dt MKTEMP 1
 .Os
 .Sh NAME
@@ -132,9 +132,9 @@
 .Sh OPTIONS
 The available options are as follows:
 .Bl -tag -width indent
-.It Fl d
+.It Fl d , Fl -directory
 Make a directory instead of a file.
-.It Fl q
+.It Fl q , Fl -quiet
 Fail silently if an error occurs.
 This is useful if
 a script does not want error output to go to standard error.
@@ -144,7 +144,7 @@
 and
 .Ev TMPDIR
 if set) to create a filename template.
-.It Fl u
+.It Fl u , Fl -dry-run
 Operate in
 .Dq unsafe
 mode.
diff --git a/usr.bin/mktemp/mktemp.c b/usr.bin/mktemp/mktemp.c
--- a/usr.bin/mktemp/mktemp.c
+++ b/usr.bin/mktemp/mktemp.c
@@ -37,6 +37,7 @@
  */
 
 #include <err.h>
+#include <getopt.h>
 #include <paths.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -50,6 +51,13 @@
 
 static void usage(void);
 
+static const struct option long_opts[] = {
+	{"directory",	no_argument,	NULL,	'd'},
+	{"quiet",	no_argument,	NULL,	'q'},
+	{"dry-run",	no_argument,	NULL,	'u'},
+	{NULL,		no_argument,	NULL,	0},
+};
+
 int
 main(int argc, char **argv)
 {
@@ -63,7 +71,7 @@
 	prefix = "mktemp";
 	name = NULL;
 
-	while ((c = getopt(argc, argv, "dqt:u")) != -1)
+	while ((c = getopt_long(argc, argv, "dqt:u", long_opts, NULL)) != -1)
 		switch (c) {
 		case 'd':
 			dflag++;