diff --git a/README.MD b/README.MD
index 3ab8f1b..b3420e5 100644
--- a/README.MD
+++ b/README.MD
@@ -30,7 +30,7 @@ All configuration options can be found in the `backup.cfg` file. The script has
 | vhost_backup | true/false | Backup of the vhost configuration |
 | vhost_dir | ------> | Path to the vhost files |
 | log_backup | true/false | Backup log files |
-| log_to_backup |array | Array of logs to backup, options: apache, nginx, fail2ban, alternatives, pckg_mngr, auth, dmesg, dpkg, letsencrypt, php, syslog|
+| log_to_backup |array | Array of logs to backup, options: apache, nginx, fail2ban, alternatives, pckg_mngr, auth, dmesg, dpkg, letsencrypt, php, syslog, purge (truncate all)|
 | rsync_push | true/false | Push the backup file to a remote server |
 | push_clean | true/false | Delete the backup file after push |
 | target_host | ------> | Backup push target host |
diff --git a/backup.cfg b/backup.cfg
index 497c4f0..34744c5 100644
--- a/backup.cfg
+++ b/backup.cfg
@@ -9,8 +9,8 @@ www_dir='xyz' # wwwroot location
 vhost_backup=false # backup vhost config 
 vhost_dir='/etc/httpd/sites-enabled' # vhost location
 log_backup=false # backup logs
-log_to_backup=("apache" "nginx" "fail2ban" "alternatives" "pckg_mngr" "auth" "dmesg" "dpkg" "letsencrypt" "php" "syslog" ) 
-# logs to backup, options: apache, nginx, fail2ban, alternatives, pckg_mngr, auth, dmesg, dpkg, letsencrypt, php, syslog)
+log_to_backup=("apache" "nginx" "fail2ban" "alternatives" "pckg_mngr" "auth" "dmesg" "dpkg" "letsencrypt" "php" "syslog" "purge") 
+# logs to backup, options: apache, nginx, fail2ban, alternatives, pckg_mngr, auth, dmesg, dpkg, letsencrypt, php, syslog, purge (truncate all))
 rsync_push=false # enable push to remote server
 push_clean=false # clean backup file after push
 target_host="127.0.0.1" # rsync target host