diff --git a/README.md b/README.md
index e7c227b..6538d95 100644
--- a/README.md
+++ b/README.md
@@ -69,6 +69,10 @@ This optional environment variable can be used to define a different port for th
 
 This optional environment variable can be used to define the default school year in RosarioSIS settings.
 
+### ROSARIOSIS_ADMIN_EMAIL
+
+This optional environment variable can be used to define an email address where to send error and new administrator notifications.
+
 ### ROSARIOSIS_LANG
 
 This optional environment variable is for RosarioSIS to show another language.
@@ -85,7 +89,6 @@ dpkg-reconfigure locales
 
 This optional environment variable is used to set the required version of RosarioSIS.
 
-
 ## SMTP
 
 RosarioSIS will attempt to send mail via the host's port 25. In order for this to work you must set the hostname of the rosariosis container to that of `host` (or some other hostname that can appear on a legal `FROM` line) and configure the host to accept SMTP from the container. For postfix this means adding the container IP addresses to `/etc/postfix/main.cf` as in: