diff --git a/docker/docker-compose.override.yml b/docker/docker-compose.override.yml
index 2ed6283..3cc7c9f 100644
--- a/docker/docker-compose.override.yml
+++ b/docker/docker-compose.override.yml
@@ -22,7 +22,8 @@
 services:
   mosquitto:
     ports:
-      - 1883:1883
+      - 1883:1883  # default
+      - 1884:1884  # websockets
   wis2-gdc-api:
     ports:
       - 80:80
diff --git a/docker/mosquitto/mosquitto.conf b/docker/mosquitto/mosquitto.conf
index 5640dd8..347fb61 100644
--- a/docker/mosquitto/mosquitto.conf
+++ b/docker/mosquitto/mosquitto.conf
@@ -12,3 +12,6 @@ acl_file /mosquitto/config/acl.conf
 ## MQTT Listener
 listener 1883
 protocol mqtt
+
+listener 1884
+protocol websockets