diff --git a/Rakefile b/Rakefile
index 4b0a947..eca2cb5 100644
--- a/Rakefile
+++ b/Rakefile
@@ -18,7 +18,7 @@ RUBIES = {
     [nil, 'ree-1.8.7-2011.03@sourcify'],
     [nil, 'jruby-1.6.3@sourcify'],
     [nil, 'ruby-1.9.1-p378@sourcify'],
-    ['METHOD_TO_SOURCE=true', 'ruby-1.9.2-p290@sourcify'],
+    ['METHOD_TO_SOURCE=true', 'ruby-1.9.2-p320@sourcify'],
     ['METHOD_TO_SOURCE=true', 'ruby-1.9.3-p194@sourcify'],
 
     # NOTE: This doesn't support Method#to_source (& friends) yet yet due to