openproject/docs/release-notes/4-0-11/README.md

---
  title: OpenProject 4.0.11
  sidebar_navigation:
      title: 4.0.11
  release_version: 4.0.11
  release_date: 2015-06-17
---


# OpenProject 4.0.11

OpenProject 4.0.11 has been released. It contains an important security
fix.

OpenProject 4.0.11 contains a [security fix for
Ruby-on-Rails](http://weblog.rubyonrails.org/2015/6/16/Rails-3-2-22-4-1-11-and-4-2-2-have-been-released-and-more/)
which is an important part of the software stack used by OpenProject
([\#20469](https://community.openproject.org/work_packages/20469)).

For further information on the release, please refer to the [Changelog
v.4.0.11](https://community.openproject.org/versions/732) or take a look
at [GitHub](https://github.com/opf/openproject/tree/v4.0.11).