diff --git a/pkgs/top-level/perl-packages.nix b/pkgs/top-level/perl-packages.nix
index 67accf016cc..c183edb1ac7 100644
--- a/pkgs/top-level/perl-packages.nix
+++ b/pkgs/top-level/perl-packages.nix
@@ -25,10 +25,10 @@ let self = _self // overrides; _self = with self; {
 
 
   ack = buildPerlPackage rec {
-    name = "ack-2.12";
+    name = "ack-2.14";
     src = fetchurl {
       url = "mirror://cpan/authors/id/P/PE/PETDANCE/${name}.tar.gz";
-      sha256 = "0avxpgg1fvib4354d9a9710j63sgxpb5j07if5qr83apq9xx7wjj";
+      sha256 = "0gqv30666vlclnwylhk9i64s7raa70x4ncy6bg48s5gcxwrshjc5";
     };
     # use gnused so that the preCheck command passes
     buildInputs = stdenv.lib.optional stdenv.isDarwin [ gnused ];