diff --git a/ChangeLog b/ChangeLog
index 108fa35b0a..ae0b5bff88 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sun Feb 17 01:19:00 2013  Zachary Scott  <zachary@zacharyscott.net>
+
+	* ext/psych/lib/psych/y.rb: Document Kernel#y by Adam Stankiewicz
+	  [Github tenderlove/psych#118]
+
 Sun Feb 17 00:52:14 2013  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* tool/mkconfig.rb: remove prefix from rubyarchdir.
diff --git a/ext/psych/lib/psych/y.rb b/ext/psych/lib/psych/y.rb
index f20d2e2a66..d0e049d4e5 100644
--- a/ext/psych/lib/psych/y.rb
+++ b/ext/psych/lib/psych/y.rb
@@ -1,4 +1,6 @@
 module Kernel
+  ###
+  # An alias for Psych.dump_stream meant to be used with IRB.
   def y *objects
     puts Psych.dump_stream(*objects)
   end