diff --git a/Dockerfile b/Dockerfile
index b9d59ea..6ec963c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,4 +15,5 @@ RUN true && \
 	rm -rf /var/lib/apt/lists/* && \
 	chmod +x /entrypoint.sh
 
+EXPOSE 40000/tcp
 ENTRYPOINT [ "/entrypoint.sh" ]