diff --git a/README.rdoc b/README.rdoc
index 9ea74e3..6f50722 100644
--- a/README.rdoc
+++ b/README.rdoc
@@ -20,7 +20,7 @@ The way WashOut is used is not modified, it just extends its functionality by ge
 
 1. {Ruby 1.9.x or Ruby 2.0.x}[http://www.ruby-lang.org]
 2. {Ruby on Rails}[http://rubyonrails.org].
-3. {WashOut Gem version >= 0.10.0.beta.1}[https://github.com/inossidabile/wash_out]
+3. {WashOut Gem version >= 0.9.1}[https://github.com/inossidabile/wash_out]
 4. {Virtus Gem}[https://github.com/solnic/virtus]
 
 = Compatibility