diff --git a/Formula/concurrencykit.rb b/Formula/concurrencykit.rb
index b23722128a9..a0b45cb0e78 100644
--- a/Formula/concurrencykit.rb
+++ b/Formula/concurrencykit.rb
@@ -2,8 +2,8 @@ require 'formula'
 
 class Concurrencykit < Formula
   homepage 'http://concurrencykit.org'
-  url 'http://concurrencykit.org/releases/ck-0.2.20.tar.gz'
-  sha1 'bc99f50a99061b1a1310fee7200591c35fcbcc36'
+  url 'http://concurrencykit.org/releases/ck-0.3.tar.gz'
+  sha1 '6106af3f3c90c65921afa264d58d004de15b6476'
 
   head 'git://git.concurrencykit.org/ck.git'