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=
diff --git a/contrib/docker/docker-compose.prod.yaml b/contrib/docker/docker-compose.prod.yaml
index 22860748..c726ba84 100644
--- a/contrib/docker/docker-compose.prod.yaml
+++ b/contrib/docker/docker-compose.prod.yaml
@@ -10,7 +10,7 @@ services:
       - --entrypoints.web.http.redirections.entryPoint.to=websecure
       - --entrypoints.web.http.redirections.entryPoint.scheme=https
       - --entryPoints.websecure.address=:443
-      - --certificatesresolvers.myresolver.acme.email=d.negrier@thecodingmachine.com
+      - --certificatesresolvers.myresolver.acme.email=${ACME_EMAIL}
       - --certificatesresolvers.myresolver.acme.storage=/acme.json
       # used during the challenge
       - --certificatesresolvers.myresolver.acme.httpchallenge.entrypoint=web