diff --git a/debian/uwsgi.ini b/debian/uwsgi.ini
index 41ca2d17..708711d6 100644
--- a/debian/uwsgi.ini
+++ b/debian/uwsgi.ini
@@ -18,19 +18,19 @@ spooler-python-import = hobo.provisionning.spooler
 spooler-max-tasks = 20
 
 # every five minutes
-unique-cron = -5 -1 -1 -1 -1 /usr/bin/chrono-manage tenant_command cancel_events --all-tenants -v0
-unique-cron = -5 -1 -1 -1 -1 /usr/bin/chrono-manage tenant_command send_email_notifications --all-tenants -v0
-unique-cron = -5 -1 -1 -1 -1 /usr/bin/chrono-manage tenant_command update_event_recurrences --all-tenants -v0
+cron2 = minute=-5,unique=1 /usr/bin/chrono-manage tenant_command cancel_events --all-tenants -v0
+cron2 = minute=-5,unique=1 /usr/bin/chrono-manage tenant_command send_email_notifications --all-tenants -v0
+cron2 = minute=-5,unique=1 /usr/bin/chrono-manage tenant_command update_event_recurrences --all-tenants -v0
 # hourly
-unique-cron = 1 -1 -1 -1 -1 /usr/bin/chrono-manage tenant_command clearsessions --all-tenants
-unique-cron = 1 -1 -1 -1 -1 /usr/bin/chrono-manage tenant_command send_booking_reminders --all-tenants
-unique-cron = 1 -1 -1 -1 -1 /usr/bin/chrono-manage tenant_command sync_desks_timeperiod_exceptions --all-tenants
+cron2 = minute=3,unique=1 /usr/bin/chrono-manage tenant_command clearsessions --all-tenants
+cron2 = minute=13,unique=1 /usr/bin/chrono-manage tenant_command send_booking_reminders --all-tenants
+cron2 = minute=23,unique=1 /usr/bin/chrono-manage tenant_command sync_desks_timeperiod_exceptions --all-tenants
 # daily
-unique-cron = 2 4 -1 -1 -1 /usr/bin/chrono-manage tenant_command anonymize_bookings --all-tenant
+cron2 = minute=33,hour=4,unique=1 /usr/bin/chrono-manage tenant_command anonymize_bookings --all-tenants
 # monthly
-unique-cron = 1 1 1 -1 -1 /usr/bin/chrono-manage tenant_command update_shared_custody_holiday_rules --all-tenant
-# every 01/01 at 1:1
-unique-cron = 1 1 1 1 -1 /usr/bin/chrono-manage tenant_command sync_desks_timeperiod_exceptions_from_settings --all-tenants -v0
+cron2 = minute=43,hour=1,day=1,unique=1 /usr/bin/chrono-manage tenant_command update_shared_custody_holiday_rules --all-tenants
+# yearly (1th january)
+cron2 = minute=53,hour=2,day=1,month=1,unique=1 /usr/bin/chrono-manage tenant_command sync_desks_timeperiod_exceptions_from_settings --all-tenants -v0
 
 master = true
 enable-threads = true