diff --git a/pkgs/tools/backup/znapzend/default.nix b/pkgs/tools/backup/znapzend/default.nix
index 796a34c253a9..7cef9971d765 100644
--- a/pkgs/tools/backup/znapzend/default.nix
+++ b/pkgs/tools/backup/znapzend/default.nix
@@ -1,6 +1,22 @@
-{ stdenv, fetchFromGitHub, zfs, mbuffer, perl, perlPackages, wget, autoconf, automake }:
+{ stdenv, fetchFromGitHub, fetchurl, zfs, mbuffer, perl, perlPackages, wget, autoconf, automake }:
 
 let
+  Mojolicious-6-46 = perlPackages.buildPerlPackage rec {
+    name = "Mojolicious-6.46";
+    src = fetchurl {
+      url = "mirror://cpan/authors/id/S/SR/SRI/${name}.tar.gz";
+      sha256 = "0i3axmx4506fx5gms148pj65x6ys7flaz1aqjd8hd9zfkd8pzdfr";
+    };
+  };
+  MojoIOLoopForkCall-0-17 = perlPackages.buildPerlModule rec {
+    name = "Mojo-IOLoop-ForkCall-0.17";
+    src = fetchurl {
+      url = "mirror://cpan/authors/id/J/JB/JBERGER/${name}.tar.gz";
+      sha256 = "090qxz1nbah2qxvfg4whl6yp6q03qkx7a42751iai521nk1yavc8";
+    };
+    propagatedBuildInputs = [ perlPackages.IOPipely Mojolicious-6-46 ];
+  };
+
   version = "0.18.0";
   checksum = "1nlvw56viwgafma506slywfg54z6009jmzc9q6wljgr6mqfmmchd";
 in
@@ -14,9 +30,7 @@ stdenv.mkDerivation rec {
     sha256 = checksum;
   };
 
-  buildInputs = [ perl perlPackages.TestHarness perlPackages.Mojolicious
-                  perlPackages.TAPParserSourceHandlerpgTAP perlPackages.MojoIOLoopForkCall
-                  perlPackages.IOPipely wget ];
+  buildInputs = [ wget perl perlPackages.TestHarness MojoIOLoopForkCall-0-17 perlPackages.TAPParserSourceHandlerpgTAP ];
 
   nativeBuildInputs = [ autoconf automake ];
 
@@ -38,25 +52,25 @@ stdenv.mkDerivation rec {
     substituteInPlace $out/bin/znapzend --replace "${perl}/bin/perl" \
       "${perl}/bin/perl \
       -I${perlPackages.TestHarness}/${perl.libPrefix} \
-      -I${perlPackages.Mojolicious}/${perl.libPrefix} \
+      -I${Mojolicious-6-46}/${perl.libPrefix} \
       -I${perlPackages.TAPParserSourceHandlerpgTAP}/${perl.libPrefix} \
-      -I${perlPackages.MojoIOLoopForkCall}/${perl.libPrefix} \
+      -I${MojoIOLoopForkCall-0-17}/${perl.libPrefix} \
       -I${perlPackages.IOPipely}/${perl.libPrefix} \
       "
     substituteInPlace $out/bin/znapzendzetup --replace "${perl}/bin/perl" \
       "${perl}/bin/perl \
       -I${perlPackages.TestHarness}/${perl.libPrefix} \
-      -I${perlPackages.Mojolicious}/${perl.libPrefix} \
+      -I${Mojolicious-6-46}/${perl.libPrefix} \
       -I${perlPackages.TAPParserSourceHandlerpgTAP}/${perl.libPrefix} \
-      -I${perlPackages.MojoIOLoopForkCall}/${perl.libPrefix} \
+      -I${MojoIOLoopForkCall-0-17}/${perl.libPrefix} \
       -I${perlPackages.IOPipely}/${perl.libPrefix} \
       "
     substituteInPlace $out/bin/znapzendztatz --replace "${perl}/bin/perl" \
       "${perl}/bin/perl \
       -I${perlPackages.TestHarness}/${perl.libPrefix} \
-      -I${perlPackages.Mojolicious}/${perl.libPrefix} \
+      -I${Mojolicious-6-46}/${perl.libPrefix} \
       -I${perlPackages.TAPParserSourceHandlerpgTAP}/${perl.libPrefix} \
-      -I${perlPackages.MojoIOLoopForkCall}/${perl.libPrefix} \
+      -I${MojoIOLoopForkCall-0-17}/${perl.libPrefix} \
       -I${perlPackages.IOPipely}/${perl.libPrefix} \
       "
   '';