diff --git a/Dockerfile b/Dockerfile
index 09ae42e7a1ad6db99b6c3061a24a17e61e8fa5fc..8940f8a1dfa7b5a992b7f68ec99b141b3a60a96f 100755
--- a/Dockerfile
+++ b/Dockerfile
@@ -22,4 +22,6 @@ RUN apt update && \
     apt --yes autoremove && \
     rm -rf /var/lib/{apt,dpkg,cache,log}/
 
+EXPOSE 6192/tcp
+
 ENTRYPOINT ["dcpomatic2_server_cli", "--verbose"]