diff --git a/dependencies.docker-compose.yml b/dependencies.docker-compose.yml
index 3a30f72..08ecfd9 100644
--- a/dependencies.docker-compose.yml
+++ b/dependencies.docker-compose.yml
@@ -19,8 +19,10 @@ services:
     ports:
       - "127.0.0.1:9092:9092"  # exposed ONLY to host localhost
     environment:
-      KAFKA_LISTENERS: PLAINTEXT://0.0.0.0:9092
-      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://localhost:9092
+      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_INTERNAL:PLAINTEXT
+      KAFKA_LISTENERS: PLAINTEXT://0.0.0.0:9092,PLAINTEXT_INTERNAL://0.0.0.0:29092
+      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://localhost:9092,PLAINTEXT_INTERNAL://kafka1:29092
+      KAFKA_INTER_BROKER_LISTENER_NAME: PLAINTEXT_INTERNAL
       KAFKA_ZOOKEEPER_CONNECT: "zoo1:2181"
       KAFKA_BROKER_ID: 1
       KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1