diff --git a/root/defaults/crontabs-mod/root b/root/defaults/crontabs-mod/root
index b5e283c..f35d7bc 100644
--- a/root/defaults/crontabs-mod/root
+++ b/root/defaults/crontabs-mod/root
@@ -1 +1,6 @@
 # min   hour    day     month   weekday command
+*/15    *       *       *       *       run-parts /etc/periodic/15min
+0       *       *       *       *       run-parts /etc/periodic/hourly
+0       2       *       *       *       run-parts /etc/periodic/daily
+0       3       *       *       6       run-parts /etc/periodic/weekly
+0       5       1       *       *       run-parts /etc/periodic/monthly