README.rdoc in bitcoin-ruby-0.0.19 vs README.rdoc in bitcoin-ruby-0.0.20

@@ -11,14 +11,12 @@
 * Bitcoin::Builder provides a high-level API for creating transactions (and blocks)
 * Bitcoin::Litecoin implements all the litecoin-specific differences
 
 == Compatible with...
 
-* ruby 1.9.3
-* ruby 2.0.0
-* ruby 2.1.2
-* ruby 2.2.0
-* ruby 2.2.2
+* ruby 2.4.x
+* ruby 2.5.x
+* ruby 2.6.x
 
 == Installation
 
  gem install bitcoin-ruby
  # OR