README.md in unipept-3.0.2 vs README.md in unipept-3.1.0

@@ -5,10 +5,10 @@
 Unipept-cli offers a command line interface to the [Unipept](http://unipept.ugent.be) web service.
 Documentation about the web service can be found at [http://unipept.ugent.be/apidocs](http://unipept.ugent.be/apidocs), documentation about the command line tools at [http://unipept.ugent.be/clidocs](http://unipept.ugent.be/clidocs).
 
 ## Installation
 
-To use the Unipept CLI, Ruby version 2.6 or higher needs to be installed. You can check this by running `ruby -v` on the commandline:
+To use the Unipept CLI, Ruby version 2.7 or higher needs to be installed. You can check this by running `ruby -v` on the commandline:
 
 ```
 $ ruby -v
 ruby 3.0.0p0 (2020-12-25 revision 95aff21468) [arm64-darwin21]
 ```