diff --git a/install_minimal/upgrades/airtime-2.1.0/MiscUpgrade.php b/install_minimal/upgrades/airtime-2.1.0/MiscUpgrade.php
index 7a4a677bb..327f35f65 100644
--- a/install_minimal/upgrades/airtime-2.1.0/MiscUpgrade.php
+++ b/install_minimal/upgrades/airtime-2.1.0/MiscUpgrade.php
@@ -5,4 +5,14 @@
 class AirtimeMiscUpgrade{
     public static function start(){
     }
+    
+    public static function adjustMonitCfgPermissions(){
+        /* Make the read permission of Monit cfg files more strict */
+        
+        chmod("/etc/monit/conf.d/monit-airtime-generic.cfg", 0600);
+        chmod("/etc/monit/conf.d/monit-airtime-liquidsoap.cfg", 0600);
+        chmod("/etc/monit/conf.d/monit-airtime-media-monitor.cfg", 0600);
+        chmod("/etc/monit/conf.d/monit-airtime-playout.cfg", 0600);
+        chmod("/etc/monit/conf.d/monit-airtime-rabbitmq-server.cfg", 0600);
+    }
 }