diff --git a/pkgs/top-level/perl-packages.nix b/pkgs/top-level/perl-packages.nix
index d84e9332746b..714bea17ee98 100644
--- a/pkgs/top-level/perl-packages.nix
+++ b/pkgs/top-level/perl-packages.nix
@@ -116,11 +116,11 @@ with self;
 
   ack = buildPerlPackage rec {
     pname = "ack";
-    version = "3.8.2";
+    version = "3.9.0";
 
     src = fetchurl {
       url = "mirror://cpan/authors/id/P/PE/PETDANCE/ack-v${version}.tar.gz";
-      hash = "sha256-pSOfWiwS4Me05DL/1+k2/u+UWpYhpBWRx307DPRYVgs=";
+      hash = "sha256-lO1Hfjs/lNEmzscynw6DmfHQzoLHxNiCqUrbFQ5//JA=";
     };
 
     outputs = [