diff --git a/doc/index.html b/doc/index.html
index f022b58..6ccb7d8 100644
--- a/doc/index.html
+++ b/doc/index.html
@@ -105,6 +105,10 @@ and <code>:c</code> stores the value <code>:d</code>.</li>
  <p>Clone into your Quicklisp project's <code>local-projects/</code>
  subdirectory, and call <code>(ql:quickload :kutils)</code>.</p>
 
+ <p>This package does ake use of
+ the <a href="https://www.common-lisp.net/project/closer/closer-mop.html"><code>closer-mop</code></a>
+ package.</a>.
+
  <h3>Git</h3>
 
    <p>You can <a href="https://github.com/kisom/kutils">browse the