diff --git a/unix/uxserver.c b/unix/uxserver.c
index 2110976c..9f2dd9be 100644
--- a/unix/uxserver.c
+++ b/unix/uxserver.c
@@ -304,9 +304,39 @@ static void show_help(FILE *fp)
     safety_warning(fp);
     fputs("\n"
           "usage:   uppity [options]\n"
-          "options: --hostkey KEY        SSH host key (need at least one)\n"
+          "options: --listen PORT        listen to a port on localhost\n"
+          "         --listen-once        (with --listen) stop after one "
+          "connection\n"
+          "         --hostkey KEY        SSH host key (need at least one)\n"
+          "         --rsakexkey KEY      key for SSH-2 RSA key exchange "
+          "(in SSH-1 format)\n"
           "         --userkey KEY        public key"
            " acceptable for user authentication\n"
+          "         --bannertext TEXT    send TEXT as SSH-2 auth banner\n"
+          "         --bannerfile FILE    send contents of FILE as SSH-2 auth "
+          "banner\n"
+          "         --kexinit-kex STR    override list of SSH-2 KEX methods\n"
+          "         --kexinit-hostkey STR  override list of SSH-2 host key "
+          "types\n"
+          "         --kexinit-cscipher STR override list of SSH-2 "
+          "client->server ciphers\n"
+          "         --kexinit-sccipher STR override list of SSH-2 "
+          "server->client ciphers\n"
+          "         --kexinit-csmac STR    override list of SSH-2 "
+          "client->server MACs\n"
+          "         --kexinit-scmac STR    override list of SSH-2 "
+          "server->client MACs\n"
+          "         --kexinit-cscomp STR   override list of SSH-2 "
+          "c->s compression types\n"
+          "         --kexinit-sccomp STR   override list of SSH-2 "
+          "s->c compression types\n"
+          "         --exitsignum         send buggy numeric \"exit-signal\" "
+          "message\n"
+          "         --verbose            print event log messages to standard "
+          "output\n"
+          "         --sshlog FILE        write SSH packet log to FILE\n"
+          "         --sshrawlog FILE     write SSH packets + raw data log"
+          " to FILE\n"
           "also:    uppity --help        show this text\n"
           "         uppity --version     show version information\n"
           "\n", fp);