diff --git a/sbin/mount_nullfs/mount_nullfs.8 b/sbin/mount_nullfs/mount_nullfs.8
index 940cb1650a3..da7eb8f3d58 100644
--- a/sbin/mount_nullfs/mount_nullfs.8
+++ b/sbin/mount_nullfs/mount_nullfs.8
@@ -30,7 +30,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd June 11, 2023
+.Dd March 24, 2024
 .Dt MOUNT_NULLFS 8
 .Os
 .Sh NAME
@@ -90,15 +90,21 @@ See the
 .Xr mount 8
 man page for possible options and their meanings.
 Additionally the following option is supported:
-.Bl -tag -width indent
+.Bl -tag -width nocache
 .It Cm nocache
 Disable metadata caching in the null layer.
 Some lower-layer file systems may force this option.
 Depending on the access pattern,
 this may result in increased lock contention.
+.It Cm cache
+Force enable metadate caching.
 .El
 .El
 .Pp
+The
+.Dv vfs.nullfs.cache_vnodes
+sysctl specifies global default for mount-specific cache/nocache option.
+.Pp
 The null layer has two purposes.
 First, it serves as a demonstration of layering by providing a layer
 which does nothing.