diff --git a/.env.example b/.env.example
index bbd825a9a..4c457f625 100644
--- a/.env.example
+++ b/.env.example
@@ -34,6 +34,7 @@ REDIS_ACTIVITY_PASSWORD=redispassword345
 # REDIS_ACTIVITY_DB_INDEX=0
 
 # Redis as celery broker
+REDIS_BROKER_HOST=redis_broker
 REDIS_BROKER_PORT=6379
 REDIS_BROKER_PASSWORD=redispassword123
 # Optional, use a different redis database (defaults to 0)