diff --git a/docker/Dockerfile b/docker/Dockerfile
index 2db34f5..68b6302 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -13,5 +13,5 @@ RUN mkdir /app
 COPY --from=build /go/src/github.com/glenux/trello2mail-go/trello2mail /app/
 COPY docker/trello2mail.cron /app/
 
-CMD ["/bin/sh", "-c", "/usr/bin/crontab /app/trello2mail.cron && /usr/sbin/crond -f"]
+CMD ["/bin/sh", "-c", "/usr/bin/crontab /app/trello2mail.cron && /usr/sbin/crond -f -d"]
 
diff --git a/docker/trello2mail.cron b/docker/trello2mail.cron
index 47cefa2..4993a86 100644
--- a/docker/trello2mail.cron
+++ b/docker/trello2mail.cron
@@ -1,8 +1,8 @@
 # Private tasks
-0 10 * * * TRELLO_URL="" /app/trello2mail
+30 10 * * * TRELLO_URL="" /app/trello2mail
 
 # Project 1
-0 10 * * * TRELLO_URL="" /app/trello2mail
+30 10 * * * TRELLO_URL="" /app/trello2mail
 
 # Project 2
-0 10 * * * TRELLO_URL="" /app/trello2mail
+30 10 * * * TRELLO_URL="" /app/trello2mail