diff --git a/docker-compose.yml b/docker-compose.yml
index e7041e5..584334d 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -16,7 +16,7 @@ services:
             - ./conf/rsync/.ssh:/root/.ssh
             - ./conf/rsync/periodic:/etc/periodic
             - ${RSYNC_LOCAL}:/mnt
-        command: /bin/sh -c "chmod -R 755 /etc/periodic && crond -f"
+        command: /bin/sh -c "chmod -R 400 /root/.ssh && chmod -R 755 /etc/periodic && crond -f"
     portainer:
         image: portainer/portainer-ce:2.5.1
         restart: always