diff --git a/CHANGELOG.md b/CHANGELOG.md
index d77d6b6a9..889aff165 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+17.09.2015
+* deploy-example.rb has been updated with `@cron_group`.
+
 11.08.2015
 
 * Possible to add whitelist_emails_for_staging list at application.yml
diff --git a/doc/application_build_doc.md b/doc/application_build_doc.md
index 4dc9535b4..dcc0190b7 100644
--- a/doc/application_build_doc.md
+++ b/doc/application_build_doc.md
@@ -117,7 +117,7 @@ General rake and mina tips:
 
 ### CRON
 
-Crontab can be setup after deploy. Jobs can be viewed [here](/config/schedule.rb).
+Crontab can be setup after deploy. Jobs can be viewed [here](/config/schedule.rb). Some jobs are dependent on `cron_group` variable set in [deploy-example.rb](/config/deploy-example.rb) file.
 
     mina pr cron:setup # to update the crontab.
     mina pr cron:clear # to clear crontab.