diff --git a/roles/grokmirror_mirror/templates/grokmirror.cron b/roles/grokmirror_mirror/templates/grokmirror.cron
index 0f141be128..0e74c321b6 100644
--- a/roles/grokmirror_mirror/templates/grokmirror.cron
+++ b/roles/grokmirror_mirror/templates/grokmirror.cron
@@ -1 +1 @@
-*/15 * * * * grokmirror /usr/bin/grok-pull -p -c {{ grokmirror_topdir }}/repos.conf
+*/30 * * * * grokmirror /usr/bin/grok-pull -p -c {{ grokmirror_topdir }}/repos.conf