diff --git a/Formula/ack.rb b/Formula/ack.rb
index e96c0796b3..2fe825b234 100644
--- a/Formula/ack.rb
+++ b/Formula/ack.rb
@@ -2,12 +2,12 @@ require 'formula'
 
 class Ack < Formula
   homepage 'http://beyondgrep.com/'
-  url 'http://beyondgrep.com/ack-2.10-single-file'
-  sha1 '6052cee5a4f580006fb9135e46411c5322c24a2a'
-  version '2.10'
+  url 'http://beyondgrep.com/ack-2.12-single-file'
+  sha1 '667b5f2dd83143848a5bfa47f7ba848cbe556e93'
+  version '2.12'
 
   def install
-    bin.install "ack-2.10-single-file" => "ack"
+    bin.install "ack-2.12-single-file" => "ack"
     system "pod2man", "#{bin}/ack", "ack.1"
     man1.install "ack.1"
   end