diff --git a/pkgs/tools/backup/znapzend/default.nix b/pkgs/tools/backup/znapzend/default.nix
index e4e7124477ae..a31406dd5f49 100644
--- a/pkgs/tools/backup/znapzend/default.nix
+++ b/pkgs/tools/backup/znapzend/default.nix
@@ -1,68 +1,65 @@
-{ lib, stdenv, fetchFromGitHub, fetchurl, perl, perlPackages, wget, autoconf, automake, autoreconfHook }:
+{ lib, stdenv, fetchFromGitHub, fetchurl, perl, autoreconfHook }:
 
 let
   # when upgrade znapzend, check versions of Perl libs here: https://github.com/oetiker/znapzend/blob/master/cpanfile
-  # pinned versions are listed at https://github.com/oetiker/znapzend/blob/master/thirdparty/cpanfile-5.30.snapshot
-  Mojolicious' = perlPackages.buildPerlPackage rec {
-    pname = "Mojolicious";
-    version = "8.73";
+  # pinned versions are listed at https://github.com/oetiker/znapzend/blob/v0.23.1/thirdparty/cpanfile-5.38.snapshot
+
+  MojoLogClearable = perl.pkgs.buildPerlModule rec {
+    pname = "Mojo-Log-Clearable";
+    version = "1.001";
     src = fetchurl {
-      url = "mirror://cpan/authors/id/S/SR/SRI/${pname}-${version}.tar.gz";
-      sha256 = "118y2264f89bbp5ly2dh36xjq25jk85s2ssxa3y4gsgsk6sjzzk1";
+      url = "mirror://cpan/authors/id/D/DB/DBOOK/${pname}-${version}.tar.gz";
+      hash = "sha256-guBqKdWemc4mC/xp77Wd7qeV2iRqY4wrQ5NRsHtsCnI=";
     };
-  };
-  MojoIOLoopForkCall' = perlPackages.buildPerlModule rec {
-    pname = "Mojo-IOLoop-ForkCall";
-    version = "0.20";
-    src = fetchurl {
-      url = "mirror://cpan/authors/id/J/JB/JBERGER/${pname}-${version}.tar.gz";
-      sha256 = "19pih5x0ayxs2m8j29qwdpi6ky3w4ghv6vrmax3ix9r59hj6569b";
-    };
-    propagatedBuildInputs = [ perlPackages.IOPipely Mojolicious' ];
+    buildInputs = with perl.pkgs; [ ModuleBuildTiny ];
+    propagatedBuildInputs = with perl.pkgs; [ Mojolicious RoleTiny ClassMethodModifiers ];
   };
 
   perl' = perl.withPackages (p:
-    [ MojoIOLoopForkCall'
-      p.TAPParserSourceHandlerpgTAP
+    with p; [
+      ClassMethodModifiers
+      ExtUtilsConfig
+      ExtUtilsHelpers
+      ExtUtilsInstallPaths
+      ModuleBuildTiny
+      MojoLogClearable
+      Mojolicious
+      RoleTiny
     ]);
-
-  version = "0.21.0";
-  sha256 = "1lg46rf2ahlclan29zx8ag5k4fjp28sc9l02z76f0pvdlj4qnihl";
 in
-stdenv.mkDerivation {
+stdenv.mkDerivation (finalAttrs: {
   pname = "znapzend";
-  inherit version;
+  version = "0.23.2";
 
   src = fetchFromGitHub {
     owner = "oetiker";
     repo = "znapzend";
-    rev = "v${version}";
-    inherit sha256;
+    # Sometimes there's a branch with the same name as the tag,
+    # confusing fetchFromGitHub. Working around this by prefixing
+    # with `refs/tags/`.
+    rev = "refs/tags/v${finalAttrs.version}";
+    hash = "sha256-UvaYzzV+5mZAAwSSMzq4fjCu/mzjeSyQdwQRTZGNktM=";
   };
 
-  buildInputs = [ wget perl' ];
+  outputs = [ "out" "man" ];
 
-  nativeBuildInputs = [ autoconf automake autoreconfHook ];
+  buildInputs = [ perl' ];
+  nativeBuildInputs = [ autoreconfHook ];
 
-  preConfigure = ''
+  postPatch = ''
     sed -i 's/^SUBDIRS =.*$/SUBDIRS = lib/' Makefile.am
-
-    grep -v thirdparty/Makefile configure.ac > configure.ac.tmp
-    mv configure.ac.tmp configure.ac
-
-    autoconf
   '';
 
-  preBuild = ''
-    aclocal
-    automake
+  doInstallCheck = true;
+  installCheckPhase = ''
+    $out/bin/znapzend --version
   '';
 
   meta = with lib; {
     description = "High performance open source ZFS backup with mbuffer and ssh support";
     homepage    = "https://www.znapzend.org";
     license     = licenses.gpl3;
-    maintainers = with maintainers; [ otwieracz ];
+    maintainers = with maintainers; [ otwieracz ma27 ];
     platforms   = platforms.all;
   };
-}
+})