diff --git a/compose.prod.yaml b/compose.prod.yaml
index 6419aff..60010e1 100644
--- a/compose.prod.yaml
+++ b/compose.prod.yaml
@@ -14,8 +14,8 @@ services:
       TRUSTED_HOSTS: ${TRUSTED_HOSTS:-.+}
       SERVER_NAME: :80
       # --- Mercure (Caddy module) ---
-      MERCURE_PUBLISHER_JWT_KEY: ${CADDY_MERCURE_JWT_SECRET}
-      MERCURE_SUBSCRIBER_JWT_KEY: ${CADDY_MERCURE_JWT_SECRET}
+      MERCURE_PUBLISHER_JWT_KEY: ${MERCURE_JWT_SECRET:-!ChangeThisMercureHubJWTSecretKey!}
+      MERCURE_SUBSCRIBER_JWT_KEY: ${MERCURE_JWT_SECRET:-!ChangeThisMercureHubJWTSecretKey!}
       MERCURE_PUBLISHER_JWT_ALG: ${MERCURE_PUBLISHER_JWT_ALG:-HS256}
       MERCURE_SUBSCRIBER_JWT_ALG: ${MERCURE_SUBSCRIBER_JWT_ALG:-HS256}
       # --- Nostr Relay ---
diff --git a/compose.yaml b/compose.yaml
index e3b5273..9dde5b7 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -7,15 +7,16 @@ services:
     environment:
         APP_ENV: ${APP_ENV:-dev}
         SERVER_NAME: ${SERVER_NAME:-localhost}, php:80
-        MERCURE_PUBLISHER_JWT_ALG: ${MERCURE_PUBLISHER_JWT_ALG:-HS256}
-        MERCURE_SUBSCRIBER_JWT_ALG: ${MERCURE_SUBSCRIBER_JWT_ALG:-HS256}
         # Run "composer require symfony/orm-pack" to install and configure Doctrine ORM
         DATABASE_URL: postgresql://${POSTGRES_USER:-app}:${POSTGRES_PASSWORD:-!ChangeMe!}@database:5432/${POSTGRES_DB:-app}?serverVersion=${POSTGRES_VERSION:-17}&charset=${POSTGRES_CHARSET:-utf8}
         # Run "composer require symfony/mercure-bundle" to install and configure the Mercure integration
         MERCURE_PUBLISHER_JWT_KEY: ${MERCURE_JWT_SECRET:-!ChangeThisMercureHubJWTSecretKey!}
         MERCURE_SUBSCRIBER_JWT_KEY: ${MERCURE_JWT_SECRET:-!ChangeThisMercureHubJWTSecretKey!}
+        MERCURE_PUBLISHER_JWT_ALG: ${MERCURE_PUBLISHER_JWT_ALG:-HS256}
+        MERCURE_SUBSCRIBER_JWT_ALG: ${MERCURE_SUBSCRIBER_JWT_ALG:-HS256}
         # Nostr relay configuration
-        NOSTR_DEFAULT_RELAY: ${NOSTR_DEFAULT_RELAY:-}
+        RELAY_DOMAIN: ${RELAY_DOMAIN:-relay.localhost}
+        NOSTR_DEFAULT_RELAY: ${NOSTR_DEFAULT_RELAY:-ws://strfry:7777}
     volumes:
       - caddy_data:/data
       - caddy_config:/config