diff --git a/dottes.tex b/dottes.tex
index 9c8e583..2b49efd 100644
--- a/dottes.tex
+++ b/dottes.tex
@@ -190,7 +190,7 @@ This is issue \build, generated \today.
 \textbf{Technical data}
 
 Book sources can be found at in a Mercurial
-(\url{http://mercurial.selenic.com}) repository at
+(\url{https://www.mercurial-scm.org/}) repository at
 \url{http://hg.cryhavoc.org.uk/dottes/}. Tunes are
 in abc notation (\url{http://abcnotation.com/}).