Step 1: $ drush archive-dump Database dump saved to /tmp/drush_tmp_1533355712_5b6526c0c36ca/drupal_8_5_2.sql [success] Archive saved to /Users/anisur/drush-backups/archive-dump/20180804040823/drupal_8_5_2.20180804_040824.tar.gz [ok] /Users/anisur/drush-backups/archive-dump/20180804040823/drupal_8_5_2.20180804_040824.tar.gz Step 2: $ drush ups Checking available update data ... [ok] Checking available update data for Drupal. [ok] Name Installed Version Proposed version Message Drupal 8.5.2 8.5.6 SECURITY UPDATE available Step 3: $ drush sset system.maintenance_mode 1 Step 4: $ drush cr Cache rebuild complete. Step 5: $ drush up drupal Update information last refreshed: Sat, 08/04/2018 - 00:17 Name Installed Version Proposed version Message Drupal 8.5.2 8.5.6 SECURITY UPDATE available Code updates will be made to drupal core. WARNING: Updating core will discard any modifications made to Drupal core files, most noteworthy among these are .htaccess and robots.txt. If you have made any modifications to these files, please back them up before updating so that you can re-create your modifications in the updated version of the file. Note: Updating core can potentially break your site. It is NOT recommended to update production sites without prior testing. Do you really want to continue? (y/n): y Project drupal was updated successfully. Installed version is now 8.5.6. Backups were saved into the directory /Users/anisur/drush-backups/drupal_8_5_2/20180804041729/drupal. [ok] No database updates required Step 6: $ drush updb No database updates required Step 7: $ drush sset system.maintenance_mode 0 Step 8: $ drush cr Cache rebuild complete.