```ruby
$:.unshift File.expand_path('../lib', __FILE__)
require 'rails-better-filters/version'

Gem::Specification.new do |s|
  s.name          = 'rails-better-filters'
  s.version       = RailsBetterFilters::VERSION

  s.license       = 'Proprietary'
  s.summary       = 'Better filters for your Rails controllers'
  s.description   = 'RailsBetterFilters provides more flexible filters for Rails controllers. Filters may specify order constraints (:before, :after), blocking constraints, and priorities.'

  s.authors       = ['FlavourSys Technology GmbH']
  s.email         = 'technology@flavoursys.com'
  s.homepage      = 'http://gitlab.flavoursys.lan/internal/rails-better-filters'

  s.require_paths = ['lib']
  s.files         = Dir.glob('lib/**/*.rb')

  s.add_development_dependency 'rspec'
end
```

Resolve open-ended dependency on rspec to fix the warning.
user
```ruby
$:.unshift File.expand_path('../lib', __FILE__)
require 'rails-better-filters/version'

Gem::Specification.new do |s|
  s.name          = 'rails-better-filters'
  s.version       = RailsBetterFilters::VERSION

  s.license       = 'Proprietary'
  s.summary       = 'Better filters for your Rails controllers'
  s.description   = 'RailsBetterFilters provides more flexible filters for Rails controllers. Filters may specify order constraints (:before, :after), blocking constraints, and priorities.'

  s.authors       = ['FlavourSys Technology GmbH']
  s.email         = 'technology@flavoursys.com'
  s.homepage      = 'http://gitlab.flavoursys.lan/internal/rails-better-filters'

  s.require_paths = ['lib']
  s.files         = Dir.glob('lib/**/*.rb')

  s.add_development_dependency 'rspec', '~> 2.14'
end
```
assistant