diff --git a/Formula/unrar.rb b/Formula/unrar.rb
index d91e1338fb7..0d0c0a2ae02 100644
--- a/Formula/unrar.rb
+++ b/Formula/unrar.rb
@@ -2,8 +2,8 @@ require 'formula'
 
 class Unrar < Formula
   homepage 'http://www.rarlab.com'
-  url 'http://www.rarlab.com/rar/unrarsrc-4.2.3.tar.gz'
-  sha1 '57cdee6f6c282c97ea768e88cdc5cceea4d5e62e'
+  url 'http://www.rarlab.com/rar/unrarsrc-4.2.4.tar.gz'
+  sha1 '1cc29603fb4e4df16a3aa9bfc7da1afaf0923259'
 
   def install
     system "make --makefile makefile.unix"