```ruby
# coding: utf-8
lib = File.expand_path('../lib', __FILE__)
$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
require 'ryespy/version'

Gem::Specification.new do |spec|
  spec.name          = "ryespy"
  spec.version       = Ryespy::VERSION
  spec.authors       = ["tiredpixel"]
  spec.email         = ["tp@tiredpixel.com"]
  spec.description   = %q{Ryespy provides a simple executable for listening to
    IMAP mailboxes or FTP folders, keeps track of what it's seen using Redis,
    and notifies Redis in a way in which Resque and Sidekiq can process using
    workers.}
  spec.summary       = %q{Ryespy listens to IMAP and FTP and queues in Redis (Sidekiq/Resque).}
  spec.homepage      = "https://github.com/tiredpixel/ryespy"
  spec.license       = "MIT"
  
  spec.files         = `git ls-files`.split($/)
  spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
  spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
  spec.require_paths = ["lib"]
  
  spec.add_dependency "redis", "~> 3.0.4"
  
  spec.add_development_dependency "bundler", "~> 1.3"
  spec.add_development_dependency "rake"
end
```

Update gemspec metadata and lock to redis 3.x instead of 3.0.x .
user
```ruby
# coding: utf-8
lib = File.expand_path('../lib', __FILE__)
$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
require 'ryespy/version'

Gem::Specification.new do |spec|
  spec.name          = "ryespy"
  spec.version       = Ryespy::VERSION
  spec.authors       = ["tiredpixel"]
  spec.email         = ["tp@tiredpixel.com"]
  spec.description   = %q{Redis Sidekiq/Resque IMAP and FTP listener.}
  spec.summary       = %q{Redis Sidekiq/Resque IMAP and FTP listener.}
  spec.homepage      = "https://github.com/tiredpixel/ryespy"
  spec.license       = "MIT"
  
  spec.files         = `git ls-files`.split($/)
  spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
  spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
  spec.require_paths = ["lib"]
  
  spec.add_dependency "redis", "~> 3.0"
  
  spec.add_development_dependency "bundler", "~> 1.3"
  spec.add_development_dependency "rake"
end
```
assistant