diff --git a/Dockerfile b/Dockerfile
index 79369f0..dfc8182 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,6 +19,6 @@ COPY ts3server.ini /tpl/ts3server.ini
 COPY ts3db_mysql.ini /tpl/ts3db_mysql.ini
 
 VOLUME ["/opt/teamspeak3"]
-EXPOSE 10011 9987/udp
+EXPOSE 10011 30033 9987/udp
 
 CMD ["/usr/bin/dumb-init","/usr/bin/init.sh"]