diff --git a/share/man/man4/lo.4 b/share/man/man4/lo.4
--- a/share/man/man4/lo.4
+++ b/share/man/man4/lo.4
@@ -27,7 +27,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd January 25, 2012
+.Dd June 23, 2024
 .Dt LO 4
 .Os
 .Sh NAME
@@ -55,11 +55,11 @@
 interfaces exist.
 .Pp
 If the transmit checksum offload capability flag is enabled on a loopback
-interface, checksums will not be generated by IP, UDP, or TCP for packets
+interface, checksums will not be generated by IP, UDP, TCP, or SCTP for packets
 sent on the interface.
 .Pp
 If the receive checksum offload capability flag is enabled on a loopback
-interface, checksums will not be validated by IP, UDP, or TCP for packets
+interface, checksums will not be validated by IP, UDP, TCP, or SCTP for packets
 received on the interface.
 .Pp
 By default, both receive and transmit checksum flags will be enabled, in