diff --git a/README.rdoc b/README.rdoc
index 2057d1512d72eb5180f33bb837fe1fb30cbe9c59..9f281915030d592188cf944161a46ebd7dcbeed4 100644
--- a/README.rdoc
+++ b/README.rdoc
@@ -29,6 +29,8 @@ IPAddress 0.8.0 has been tested on:
 * jruby-1.6.1 [ linux-i386-java ]
 * ruby-1.9.1-p431 [ i386 ]
 * ruby-1.9.2-p180 [ i386 ]
+* ruby-2.0.0-p353 [ x86_64-darwin14.0.0 ]
+* ruby-2.1.3-p242 [ x86_64-darwin14.0.0 ]
 
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