diff --git a/creation-template-lxc-debian-buster.md b/creation-template-lxc-debian-buster.md
index 4d1d036..835c162 100644
--- a/creation-template-lxc-debian-buster.md
+++ b/creation-template-lxc-debian-buster.md
@@ -167,6 +167,8 @@ git commit -a -m "commit initial"
 apt install less vim
 update-alternatives --config editor
 
+dpkg-reconfigure tzdata
+
 apt install nullmailer  # "" / mail.example.net / postmaster@example.net
 rm mailname && ln -s hostname mailname  # pas très orthodoxe :-/