```ruby
# Standard Ruby.
require 'singleton'
require 'set'

# Gems.
require 'rubygems'
require 'active_support'
require 'eventmachine'
require 'json'
require 'ruby-debug'

# Application.
require 'officer/log'
require 'officer/commands'
require 'officer/connection'
require 'officer/lock_store'
require 'officer/server'
```

Remove dependency on ruby debug
user
```ruby
# Standard Ruby.
require 'singleton'
require 'set'

# Gems.
require 'rubygems'
require 'active_support'
require 'eventmachine'
require 'json'

# Application.
require 'officer/log'
require 'officer/commands'
require 'officer/connection'
require 'officer/lock_store'
require 'officer/server'
```
assistant