diff --git a/Production/docker-compose.yml b/Production/docker-compose.yml
index 2f111aa..61afeed 100644
--- a/Production/docker-compose.yml
+++ b/Production/docker-compose.yml
@@ -47,7 +47,7 @@ services:
     environment:
       NGINX_DOCKER_GEN_CONTAINER: "nginx-gen"
       NGINX_PROXY_CONTAINER: "nginx"
-      ACME_CA_URI:
+      ACME_CA_URI: ${ACME_CA_URI:-https://acme-staging.api.letsencrypt.org/directory}
     links:
       - nginx