diff --git a/Dockerfile b/Dockerfile
index dda1d3e09..63340efd0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -71,5 +71,5 @@ USER rails:rails
 ENTRYPOINT ["/rails/bin/docker-entrypoint"]
 
 # Start the server by default, this can be overwritten at runtime
-EXPOSE 80 443
+EXPOSE 80 443 9394
 CMD ["./bin/thrust", "./bin/rails", "server"]