diff --git a/can.1 b/can.1
index 9a90210..579c935 100644
--- a/can.1
+++ b/can.1
@@ -7,6 +7,11 @@
 .Sh SYNOPSIS
 .Nm can
 .Op Fl GghqU
+.Op Fl \-gid
+.Op Fl \-group
+.Op Fl \-help
+.Op Fl \-quiet
+.Op Fl \-uid
 .Ar user
 .Ar action
 .Ar path
diff --git a/can.c b/can.c
index c6484df..a3099cc 100644
--- a/can.c
+++ b/can.c
@@ -38,7 +38,7 @@ enum lookup_mode: char {
 
 [[noreturn]] static void exit_with_usage(int ec) {
   fprintf(ec == EXIT_SUCCESS ? stdout : stderr,
-          "usage: %s [-GghqU] user action path\n",
+          "usage: %s [-GghqU] [--gid] [--group] [--help] [--quiet] [--uid] user action path\n",
           getprogname());
   exit(ec); }