diff --git a/lib/libc/string/memcpy.3 b/lib/libc/string/memcpy.3
--- a/lib/libc/string/memcpy.3
+++ b/lib/libc/string/memcpy.3
@@ -31,7 +31,7 @@
 .\"
 .\"     @(#)memcpy.3	8.1 (Berkeley) 6/4/93
 .\"
-.Dd July 14, 2021
+.Dd November 18, 2023
 .Dt MEMCPY 3
 .Os
 .Sh NAME
@@ -77,7 +77,7 @@
 .Xr memccpy 3 ,
 .Xr memmove 3 ,
 .Xr strcpy 3 ,
-.Xr wmemcpy 3
+.Xr wmemcpy 3 ,
 .Xr wmempcpy 3
 .Sh STANDARDS
 The
@@ -85,3 +85,14 @@
 function
 conforms to
 .St -isoC .
+.Sh HISTORY
+The
+.Fn memcpy
+function first appeared in
+.At V
+and was reimplemented for
+.Bx 4.3 Tahoe .
+The
+.Fn mempcpy
+function first appeared in
+.Fx 13.1 .