diff --git a/conf/mastodon-sidekiq.service b/conf/mastodon-sidekiq.service
index d9c54a0..14bd592 100644
--- a/conf/mastodon-sidekiq.service
+++ b/conf/mastodon-sidekiq.service
@@ -23,17 +23,17 @@ StandardError=inherit
 # Details for these options: https://www.freedesktop.org/software/systemd/man/systemd.exec.html
 NoNewPrivileges=no
 PrivateTmp=yes
-#PrivateDevices=yes
-#RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6 AF_NETLINK
-#RestrictNamespaces=yes
-#RestrictRealtime=yes
+PrivateDevices=yes
+RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6 AF_NETLINK
+RestrictNamespaces=yes
+RestrictRealtime=yes
 DevicePolicy=closed
 ProtectSystem=full
 ProtectControlGroups=yes
-#ProtectKernelModules=yes
-#ProtectKernelTunables=yes
-#LockPersonality=yes
-#SystemCallFilter=~@clock @debug @module @mount @obsolete @reboot @setuid @swap
+ProtectKernelModules=yes
+ProtectKernelTunables=yes
+LockPersonality=yes
+SystemCallFilter=~@clock @debug @module @mount @obsolete @reboot @setuid @swap
 
 # Denying access to capabilities that should not be relevant for webapps
 # Doc: https://man7.org/linux/man-pages/man7/capabilities.7.html
diff --git a/scripts/upgrade b/scripts/upgrade
index 4797f1c..f2ff7d7 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -12,8 +12,6 @@ source ynh_add_swap
 source /usr/share/yunohost/helpers
 
 upgrade_type=$(ynh_check_app_version_changed)
-
-admin_mail=$(ynh_user_get_info --username=$admin --key='mail')
 config="$install_dir/live/.env.production"
 
 #=================================================