diff --git a/docker/proxy/Dockerfile b/docker/proxy/Dockerfile
index b18a8bdb..7e802a70 100644
--- a/docker/proxy/Dockerfile
+++ b/docker/proxy/Dockerfile
@@ -1,29 +1,29 @@
 FROM fedora:35
 
 MAINTAINER Jeroen van Meeuwen <vanmeeuwen@kolabsys.com>
 
 ENV container docker
 
 RUN dnf -y install \
         --setopt 'tsflags=nodocs' \
         nginx \
         nginx-mod-mail && \
     dnf clean all
 
 COPY rootfs/ /
 ARG APP_WEBSITE_DOMAIN
 ARG SSL_CERTIFICATE
 ARG SSL_CERTIFICATE_KEY
 RUN sed -i -r -e "s|APP_WEBSITE_DOMAIN|$APP_WEBSITE_DOMAIN|g" /etc/nginx/nginx.conf
 RUN sed -i -r -e "s|SSL_CERTIFICATE_CERT|$SSL_CERTIFICATE|g" /etc/nginx/nginx.conf
 RUN sed -i -r -e "s|SSL_CERTIFICATE_KEY|$SSL_CERTIFICATE_KEY|g" /etc/nginx/nginx.conf
 
 # Forward request logs to Docker log collector
 RUN ln -sf /dev/stdout /var/log/nginx/access.log \
     && ln -sf /dev/stderr /var/log/nginx/error.log
 
 STOPSIGNAL SIGTERM
 
 CMD ["nginx", "-g", "daemon off;"]
 
-EXPOSE 80/tcp 443/tcp 465/tcp 587/tcp 143/tcp 993/tcp
+EXPOSE 80/tcp 443/tcp 465/tcp 587/tcp 143/tcp 144/tcp 993/tcp