diff --git a/doc/go1.21.html b/doc/go1.21.html
index b59378fe35..e6a7b6a3e9 100644
--- a/doc/go1.21.html
+++ b/doc/go1.21.html
@@ -222,6 +222,13 @@ Do not send CLs removing the interior tags from such phrases.
   TODO: complete this section, or delete if not needed
 </p>
 
+<h2 id="assembler">Assembler</h2>
+
+<!-- CL 476295 -->
+<p>
+  The verifier that checks for incorrect uses of <code>R15</code> when dynamic linking on amd64 has been improved.
+</p>
+
 <h2 id="linker">Linker</h2>
 
 <!-- CL 457455 -->