diff --git a/README.md b/README.md
index 6c41ff6..1c01bec 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # SpanishVatValidators [![Build Status](https://travis-ci.org/dgilperez/spanish_vat_validators.svg?branch=master)](https://travis-ci.org/dgilperez/spanish_vat_validators)[![Code Climate](https://codeclimate.com/github/dgilperez/spanish_vat_validators/badges/gpa.svg)](https://codeclimate.com/github/dgilperez/spanish_vat_validators)
 
-I've adapted the code from the ValidateSpanishVAT plugin from https://github.com/lleirborras/ValidateSpanishVAT to be distributed as a gem for ease of use with Rails 3.
+I've adapted the code from the ValidateSpanishVAT plugin from https://github.com/lleirborras/ValidateSpanishVAT to be distributed as a gem for ease of use with Rails >= 3.2.
 
 Also added I18n support for error messages, which you can change by adding this to your locale yml: