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
@@ -1,4 +1,4 @@
-.Dd April 1, 2025
+.Dd June 9, 2025
 .Dt TOP 1
 .Os
 .Sh NAME
@@ -398,6 +398,7 @@
 USERNAME is the name of the process's owner (if
 .Fl u
 is specified, a UID column will be substituted for USERNAME),
+THR is the thread count, showing the number of threads a process has,
 PRI is the current priority of the process,
 NICE is the
 .Xr nice 1