diff --git a/mosquitto/docker-compose.yml b/mosquitto/docker-compose.yml
index b01f375..2b65c29 100644
--- a/mosquitto/docker-compose.yml
+++ b/mosquitto/docker-compose.yml
@@ -4,7 +4,7 @@ services:
   mosquitto:
     image: eclipse-mosquitto
     expose:
-      - "1883"
+      - "1884"
       - "9001"
     ports:
       - "1884:1884"