README.md in truemail-1.4.0 vs README.md in truemail-1.4.1

@@ -35,10 +35,11 @@
   - [Host audit features](#host-audit-features)
     - [PTR audit](#ptr-audit)
   - [Truemail helpers](#truemail-helpers)
     - [.valid?](#valid)
   - [Test environment](#test-environment)
+- [Truemail family](#truemail-family)
 - [Contributing](#contributing)
 - [License](#license)
 - [Code of Conduct](#code-of-conduct)
 - [Versioning](#versioning)
 - [Changelog](CHANGELOG.md)
@@ -946,9 +947,17 @@
   config.before { allow(Truemail).to receive_message_chain(:validate, :result, :valid?).and_return(true) }
 end
 ```
 
 ---
+## Truemail family
+
+All Truemail extensions: https://github.com/truemail-rb
+
+### truemail-rspec
+
+gem `truemail-rspec` - Truemail configuration and validator RSpec helpers, https://github.com/truemail-rb/truemail-rspec
+
 ## Contributing
 
 Bug reports and pull requests are welcome on GitHub at https://github.com/rubygarage/truemail. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the [Contributor Covenant](http://contributor-covenant.org) code of conduct. Please check the [open tikets](https://github.com/rubygarage/truemail/issues). Be shure to follow Contributor Code of Conduct below and our [Contributing Guidelines](CONTRIBUTING.md).
 
 ## License