diff --git a/share/man/man4/tcp_bbr.4 b/share/man/man4/tcp_bbr.4
--- a/share/man/man4/tcp_bbr.4
+++ b/share/man/man4/tcp_bbr.4
@@ -22,12 +22,19 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd December 17, 2023
+.Dd April 21, 2024
 .Dt TCP_BBR 4
 .Os
 .Sh NAME
 .Nm tcp_bbr
 .Nd TCP Bottleneck Bandwidth and Round-Trip Time Algorithm
+.Sh DEPRECATION NOTICE
+.Nm
+is deprecated and is not available in
+.Fx 15
+or later.
+It is recommended to use the default TCP stack or
+.Xr tcp_rack 4 .
 .Sh SYNOPSIS
 To load the driver as a module at boot time, place the following line in
 .Xr loader.conf 5 :