--- a/src/learn.html.luan	Mon May 18 19:21:06 2026 -0600
+++ b/src/learn.html.luan	Wed May 27 18:49:06 2026 +0900
@@ -80,7 +80,7 @@
 		title = [[Mercurial - Source Control]]
 		content = function()
 %>
-<p>Thankfully <a href="mercurial.html">Mercurial</a> is well documented.  Read <a href="https://hgbook.red-bean.com/">Mercurial: The Definitive Guide</a> up to (and including) chapter 9.</p>
+<p>Thankfully <a href="mercurial.html">Mercurial</a> is well documented.  Read <a href="https://book.mercurial-scm.org/read/">Mercurial: The Definitive Guide</a> up to (and including) "Working together".</p>
 
 <p>To get started with Mercurial, download Mercurial from <a href="https://www.mercurial-scm.org/">their website</a> and install it.  Then do:</p>