diff --git a/share/man/man4/ipsec.4 b/share/man/man4/ipsec.4
index 7aa8cf8df9c..9346458cc37 100644
--- a/share/man/man4/ipsec.4
+++ b/share/man/man4/ipsec.4
@@ -28,7 +28,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd January 29, 1999
+.Dd January 11, 2005
 .Dt IPSEC 4
 .Os
 .Sh NAME
@@ -266,6 +266,18 @@ routines from looking into IP payload.
 .Xr setkey 8 ,
 .Xr sysctl 8
 .\".Xr racoon 8
+.Rs
+.%A "S. Kent"
+.%A "R. Atkinson"
+.%T "IP Authentication Header"
+.%O "RFC 2404"
+.Re
+.Rs
+.%A "S. Kent"
+.%A "R. Atkinson"
+.%T "IP Encapsulating Security Payload (ESP)"
+.%O "RFC 2406"
+.Re
 .Sh STANDARDS
 .Rs
 .%A Daniel L. McDonald