diff --git a/lib/msun/man/log.3 b/lib/msun/man/log.3
index b08e6922e88e..424b59d0703f 100644
--- a/lib/msun/man/log.3
+++ b/lib/msun/man/log.3
@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd June 3, 2013
+.Dd March 22, 2020
 .Dt LOG 3
 .Os
 .Sh NAME
@@ -135,3 +135,14 @@ and
 .Fn log1pl
 functions conform to
 .St -isoC-99 .
+.Sh HISTORY
+The
+.Fn log
+function first appeared in
+.At v1 ;
+.Fn log10
+in
+.At v7 ;
+.Fn log1p
+in
+.Bx 4.3 .