README.md in contracts-0.17 vs README.md in contracts-0.17.1

@@ -1,13 +1,21 @@
 This project is looking for a new maintainer! [More details here](https://github.com/egonSchiele/contracts.ruby/issues/249)
 
-# contracts.ruby [![GitHub Build Status](https://img.shields.io/github/workflow/status/egonSchiele/contracts.ruby/Tests?style=flat-square)](https://github.com/egonSchiele/contracts.ruby/actions?query=workflow%3ATests) [![Join the chat at https://gitter.im/egonSchiele/contracts.ruby](https://img.shields.io/badge/gitter-join%20chat-brightgreen.svg)](https://gitter.im/egonSchiele/contracts.ruby)
 
+
+# contracts.ruby [![GitHub Build Status](https://img.shields.io/github/actions/workflow/status/egonSchiele/contracts.ruby/tests.yaml?branch=master&style=flat-square)](https://github.com/egonSchiele/contracts.ruby/actions/workflows/tests.yaml) [![Join the chat at https://gitter.im/egonSchiele/contracts.ruby](https://img.shields.io/badge/gitter-join%20chat-brightgreen.svg)](https://gitter.im/egonSchiele/contracts.ruby)
+
 Contracts let you clearly – even beautifully – express how your code behaves, and free you from writing tons of boilerplate, defensive code.
 
 You can think of contracts as `assert` on steroids.
 
+## 0.17.x = Ruby 3.x only
+
+0.17.x only supports Ruby 3.x  
+Looking for Ruby 2.x support?  
+Use 0.16.x  
+
 ## Installation
 
     gem install contracts
 
 ## Hello World
@@ -81,10 +89,10 @@
 
 Using contracts.ruby results in very little slowdown. Check out [this blog post](http://adit.io/posts/2013-03-04-How-I-Made-My-Ruby-Project-10x-Faster.html#seconds-6) for more info.
 
 **Q.** What Rubies can I use this with?
 
-**A.** It's been tested with `2.1`, `2.2`, `2.3`, `2.4`, `2.5`, `2.6` and `2.7`.
+**A.** It's been tested with `3.0` and `3.1`. (In case this list becomes outdated see [`.github/workflows/tests.yaml`](/.github/workflows/tests.yaml))
 
 If you're using the library, please [let me know](https://github.com/egonSchiele) what project you're using it on :)
 
 ## Testimonials