diff --git a/doc/go1.21.html b/doc/go1.21.html
index c1cca12d22..040a12c682 100644
--- a/doc/go1.21.html
+++ b/doc/go1.21.html
@@ -25,6 +25,15 @@ Do not send CLs removing the interior tags from such phrases.
 
 <h2 id="language">Changes to the language</h2>
 
+<!-- https://go.dev/issue/59488 -->
+<p>
+  Go 1.21 adds two new built-ins to the language:
+  the new functions <code>min</code> and <code>max</code> compute the
+  smallest (or largest, for <code>max</code>) value of a fixed number
+  of given arguments.
+  See the language spec for <a href="https://tip.golang.org/ref/spec#Min_and_max">details</a>.
+</p>
+
 <p><!-- https://go.dev/issue/56986 -->
   TODO: <a href="https://go.dev/issue/56986">https://go.dev/issue/56986</a>: extended backwards compatibility for Go
 </p>