diff --git a/playbooks/tasks/web/nagios.yml b/playbooks/tasks/web/nagios.yml
index dbb8511..0ae5ea8 100644
--- a/playbooks/tasks/web/nagios.yml
+++ b/playbooks/tasks/web/nagios.yml
@@ -34,8 +34,18 @@
         command: check_by_ssh!/usr/local/bin/monitoring-scripts/check_systemd_unit backup.service
       - name: Unit backup.timer
         command: check_by_ssh!/usr/local/bin/monitoring-scripts/check_systemd_unit backup.timer
+      - name: Unit cron.service
+        command: check_by_ssh!/usr/local/bin/monitoring-scripts/check_systemd_unit cron.service
+      - name: Unit dbus.service
+        command: check_by_ssh!/usr/local/bin/monitoring-scripts/check_systemd_unit dbus.service
       - name: Unit docker.service
         command: check_by_ssh!/usr/local/bin/monitoring-scripts/check_systemd_unit docker.service
+      - name: Unit polkit.service
+        command: check_by_ssh!/usr/local/bin/monitoring-scripts/check_systemd_unit polkit.service
+      - name: Unit ssh.service
+        command: check_by_ssh!/usr/local/bin/monitoring-scripts/check_systemd_unit ssh.service
+      - name: Unit systemd-resolved.service
+        command: check_by_ssh!/usr/local/bin/monitoring-scripts/check_systemd_unit systemd-resolved.service
       - name: Users
         command: check_by_ssh!/usr/lib/nagios/plugins/check_users -w 3 -c 5
       # Tag-specific checks
@@ -46,6 +56,10 @@
       - name: Unit ansible-pull.timer
         command: check_by_ssh!/usr/local/bin/monitoring-scripts/check_systemd_unit ansible-pull.timer
         hostgroup: ansible-pull
+      # zerotier
+      - name: Unit zerotier-one.service
+        command: check_by_ssh!/usr/local/bin/monitoring-scripts/check_systemd_unit zerotier-one.service
+        hostgroup: zerotier
       # nagios-checkpgsql
       - name: PostgreSQL
         command: "check_by_ssh!/usr/lib/nagios/plugins/check_pgsql -H localhost -l nagios -p {{ secret_postgresql_monitoring_password }} -w 2 -c 5"