---
layout: releasenotes
title: Mono 4.0.5 Release Notes
version: 4.0.5
releasedate: '2015-10-22'
---

Mono 4.0.5 is a hotfix release that improves compatibility with the newly-released Mac OS X 10.11 (El Capitan). There are no other changes from 4.0.4.

Bug Fixes
---------

* [34470](https://bugzilla.xamarin.com/show_bug.cgi?id=34470): Can't compile F# app on OS X El Capitan
* [34345](https://bugzilla.xamarin.com/show_bug.cgi?id=34345): If /usr/local/bin folder does not exist, the mono path entry is not created

Contributors
------------

Alexis Christoforides