```ruby
require File.expand_path("../lib/adequate_exposure/version", __FILE__)

Gem::Specification.new do |spec|
  spec.name         = "adequate_exposure"
  spec.version      = AdequateExposure::VERSION
  spec.authors      = ["Pavel Pravosud"]
  spec.email        = ["pavel@pravosud.com"]
  spec.summary      = "Exposing things, adequately"
  spec.homepage     = "https://github.com/rwz/adequate_exposure"
  spec.license      = "MIT"
  spec.files        = `git ls-files -z`.split("\x0")
  spec.test_files   = spec.files.grep(/\Aspec\//)
  spec.require_path = "lib"

  spec.required_ruby_version = "~> 2.0"

  spec.add_dependency "railties",      ">= 5.0", "< 7"
  spec.add_dependency "activesupport", ">= 5.0", "< 7"
end
```

Allow any Ruby version greater than 2.0
user
```ruby
require File.expand_path("../lib/adequate_exposure/version", __FILE__)

Gem::Specification.new do |spec|
  spec.name         = "adequate_exposure"
  spec.version      = AdequateExposure::VERSION
  spec.authors      = ["Pavel Pravosud"]
  spec.email        = ["pavel@pravosud.com"]
  spec.summary      = "Exposing things, adequately"
  spec.homepage     = "https://github.com/rwz/adequate_exposure"
  spec.license      = "MIT"
  spec.files        = `git ls-files -z`.split("\x0")
  spec.test_files   = spec.files.grep(/\Aspec\//)
  spec.require_path = "lib"

  spec.required_ruby_version = ">= 2.0"

  spec.add_dependency "railties",      ">= 5.0", "< 7"
  spec.add_dependency "activesupport", ">= 5.0", "< 7"
end
```
assistant