README.md in react_on_rails-6.9.1 vs README.md in react_on_rails-6.9.2

- old
+ new

@@ -561,10 +561,11 @@
   foreman start
   ```
 
 ## Dependencies
 + Ruby 2.1 or greater
-+ Rails 3.2 or greater
++ Rails 4.2 or greater
+  + Rails 3.2 will work and is tested up to 6.8.x. We are not testing it for new releases. If you find an issue, you will have to submit a PR to get it fixed.
 + Node 5.5 or greater
 
 ## Contributing
 Bug reports and pull requests are welcome. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to our version of the [Contributor Covenant Code of Conduct](docs/misc/code_of_conduct.md)).
 