*Make sure you view this [upgrade guide from the `master` branch](https://gitlab.com/gitlab-org/gitlab-ce/tree/master/doc/update/4.0-to-4.1.md) for the most up to date instructions.*
## Important changes
- Resque replaced with Sidekiq
- New options for configuration file added
- Init.d script should be updated
- **requires ruby1.9.3-p327**
## 1. Stop GitLab & Resque
sudo service gitlab stop
## 2. Update GitLab
```bash
# Set the working directory
cd /home/gitlab/gitlab/
# Get latest code
sudo -u gitlab -H git fetch
sudo -u gitlab -H git checkout 4-1-stable
# The Modernizr gem was yanked from RubyGems. It is required for GitLab >= 2.8.0
# Edit `Gemfile` and change `gem "modernizr", "2.5.3"` to
# `gem "modernizr-rails", "2.7.1"``
sudo -u gitlab -H vim Gemfile
# Install gems for MySQL
sudo -u gitlab -H bundle install --without development test postgres