diff --git a/monitoring/nagios.py b/monitoring/nagios.py
index 5fd51d17123..38a1f8c161a 100644
--- a/monitoring/nagios.py
+++ b/monitoring/nagios.py
@@ -53,6 +53,7 @@ options:
     required: false
     default: Ansible
   comment:
+    version_added: "2.0"
     description:
      - Comment for C(downtime) action.
     required: false