diff --git a/index.html b/index.html
index bab8d1b26..22e7c43fb 100644
--- a/index.html
+++ b/index.html
@@ -102,10 +102,10 @@ <h2 id="docs">Documentation</h2>
              <li>The Scheme Programming Language (4th Edition) [
                <a href="http://scheme.com/tspl4/">html</a> |
                <a href="https://mitpress.mit.edu/books/scheme-programming-language-fourth-edition">print</a> ]</li>
-             <li>The Chez Scheme User's Guide for Version 9.6.0 [
+             <li>The Chez Scheme User's Guide for Version 9.6.4 [
                <a href="csug9.6/csug.html">html</a> |
                <a href="csug9.6/csug9_6.pdf">pdf</a> ]</li>
-             <li>Chez Scheme Version 9.6.0 release notes [
+             <li>Chez Scheme Version 9.6.4 release notes [
                <a href="release_notes/v9.6/release_notes.html">html</a> |
                <a href="release_notes/v9.6/release_notes.pdf">pdf</a> ]</li>
            </ul>