diff --git a/doc/linux.rst b/doc/linux.rst
index ce94f81e9a3187f2581fb31a4b579a51aa7b7636..1f0af097fe528324b22fe86d41c2331f897d9fae 100644
--- a/doc/linux.rst
+++ b/doc/linux.rst
@@ -263,3 +263,11 @@ Extra packages
 List of extra packages to ensure are installed on the shell environment:
 
 * rsync
+
+
+Locale
+======
+
+Ensure to set the default locale as ``C.UTF-8`` by re-running
+``dpkg-reconfigure locales``.  The click (python) package `requires it
+<https://click.palletsprojects.com/en/7.x/python3/>`_.