diff --git a/Formula/unrar.rb b/Formula/unrar.rb
index ca94bad0c7..8e602dbd9d 100644
--- a/Formula/unrar.rb
+++ b/Formula/unrar.rb
@@ -1,8 +1,8 @@
 require 'formula'
 
 class Unrar <Formula
-  url 'http://www.rarlab.com/rar/unrarsrc-3.9.10.tar.gz'
-  md5 '3c130ae52ff9fece50af988c343e396d'
+  url 'http://www.rarlab.com/rar/unrarsrc-4.0.6.tar.gz'
+  md5 '52c8b40a2f041b55baa508f2db091855'
   homepage 'http://www.rarlab.com'
 
   def install