diff --git a/nagios-nrpe/README.md b/nagios-nrpe/README.md
index 3f3f9a99..6d72920e 100644
--- a/nagios-nrpe/README.md
+++ b/nagios-nrpe/README.md
@@ -9,5 +9,6 @@ Everything is in the `tasks/main.yml` file.
 ## Available variables
 
 * `nagios_nrpe_allowed_hosts` : list of IP/hosts authorized (default: none).
+* `nagios_nrpe_force_update_allowed_hosts` : force update list of allowed hosts (default: `False`)
 
 The full list of variables (with default values) can be found in `defaults/main.yml`.