diff --git a/README.rdoc b/README.rdoc
index af9f224..7120fec 100644
--- a/README.rdoc
+++ b/README.rdoc
@@ -56,6 +56,16 @@ How about with symbolized keys?
     # do something with row, it's ready to rock
   end
 
+== Compatibility
+
+The specs pass on my system (SL 10.6.3, x86_64) in these rubies:
+
+* 1.8.7-p249
+* ree-1.8.7-2010.01
+* 1.9.1-p378
+* ruby-trunk
+* rbx-head
+
 == Yeah... but why?
 
 Someone: Dude, the Mysql gem works fiiiiiine.