diff --git a/README.md b/README.md
index 85f99b4..dd03303 100644
--- a/README.md
+++ b/README.md
@@ -5,11 +5,13 @@ This Icinga/Nagios check plugin permit to check Forgejo instance upgrade status
 ## Installation
 
 ```
-apt install git
+apt install git python3-requests python3-xmltodict
 git clone https://gitea.zionetrix.net/bn8/check_forgejo_upgrade.git /usr/local/src/check_forgejo_upgrade
 mkdir -p /usr/local/lib/nagios/plugins
 ln -s /usr/local/src/check_forgejo_upgrade/check_forgejo_upgrade /usr/local/lib/nagios/plugins/
-echo "command[check_forgejo_upgrade]=/usr/local/lib/nagios/plugins/check_forgejo_upgrade" > /etc/nagios/nrpe.d/forgejo.cfg
+echo "nagios ALL=NOPASSWD: /usr/local/lib/nagios/plugins/check_forgejo_upgrade" > /etc/sudoers.d/nagios-gitea
+chmod 0400 /etc/sudoers.d/nagios-gitea
+echo "command[check_forgejo_upgrade]=sudo /usr/local/lib/nagios/plugins/check_forgejo_upgrade" > /etc/nagios/nrpe.d/forgejo.cfg
 service nagios-nrpe-server reload
 ```