diff --git a/contrib/pf/man/pf.4 b/contrib/pf/man/pf.4
index 75e421d21d13..1793c2ad0628 100644
--- a/contrib/pf/man/pf.4
+++ b/contrib/pf/man/pf.4
@@ -28,7 +28,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd September 10 2008
+.Dd June 28 2011
 .Dt PF 4
 .Os
 .Sh NAME
@@ -1146,4 +1146,9 @@ main(int argc, char *argv[])
 The
 .Nm
 packet filtering mechanism first appeared in
-.Ox 3.0 .
+.Ox 3.0
+and then
+.Fx 5.2 .
+.Pp
+This implementation matches
+.Ox 4.5 .