diff --git a/Dockerfile b/Dockerfile
index 8afe53d..bfd0507 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,5 +2,4 @@ FROM alpine:3.12
 RUN \
   apk -U upgrade && apk add mosquitto mosquitto-clients openssl && \
   echo "log_dest stdout" >/etc/mosquitto/mosquitto.conf
-EXPOSE 8883
 ENTRYPOINT ["mosquitto", "-c", "/etc/mosquitto/mosquitto.conf"]