diff --git a/.env.template b/.env.template
index a83bd171..a54df82e 100644
--- a/.env.template
+++ b/.env.template
@@ -10,3 +10,6 @@ START_ROOM_URL=/_/global/maps.workadventure.localhost/Floor0/floor0.json
 # If you are using Coturn, this is the value of the "static-auth-secret" parameter in your coturn config file.
 # Keep empty if you are sharing hard coded / clear text credentials.
 TURN_STATIC_AUTH_SECRET=
+
+# The email address used by Let's encrypt to send renewal warnings (compulsory)
+ACME_EMAIL=