diff --git a/usr.bin/top/top.1 b/usr.bin/top/top.1
--- a/usr.bin/top/top.1
+++ b/usr.bin/top/top.1
@@ -520,6 +520,10 @@
 .Xr humanize_number 3 ,
 .Xr mem 4 ,
 .Xr renice 8
+.Sh HISTORY
+.Nm
+first appeared in
+.Fx 2.2.2 .
 .Sh AUTHORS
 .An William LeFebvre, EECS Department, Northwestern University
 .Sh BUGS