--- a/Sphinx/source/developers/repositories.rst	Mon Apr 20 09:11:41 2020 +0200
+++ b/Sphinx/source/developers/repositories.rst	Tue Apr 21 08:56:07 2020 +0200
@@ -63,7 +63,9 @@
 
 Anybody has full read-only access to all of the Orthanc official
 repositories, on our `self-hosted server
-<https://hg.orthanc-server.com/>`__.
+<https://hg.orthanc-server.com/>`__. As the ``hg serve`` tool that is
+used by our Web server tends to be slow, we recommend people to
+locally clone our Mercurial repositories.
 
 .. highlight:: bash