diff --git a/share/man/man4/termios.4 b/share/man/man4/termios.4
--- a/share/man/man4/termios.4
+++ b/share/man/man4/termios.4
@@ -25,7 +25,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd June 28, 2020
+.Dd January 14, 2026
 .Dt TERMIOS 4
 .Os
 .Sh NAME
@@ -759,7 +759,9 @@
 the percentage of cpu the process is getting, and the resident
 set size of the process.
 .Pp
-In case the
+In case the kernel has
+.Xr stack 9
+support configured and the
 .Xr sysctl 8
 variable
 .Va kern.tty_info_kstacks