Index: general/prog/perl-deps.xml
===================================================================
--- general/prog/perl-deps.xml	(revision bf88d466fb968b10a9fe53d374fc5dd0c658d236)
+++ general/prog/perl-deps.xml	(revision 2d0650bce904fdc18a88952533c19fafc3c7b82a)
@@ -518,4 +518,9 @@
       <listitem>
         <para>
+          <xref linkend="perl-timedate"/>
+        </para>
+      </listitem>
+      <listitem>
+        <para>
           <xref linkend="perl-try-tiny"/>
         </para>
@@ -830,4 +835,7 @@
 
   <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+    href="perl-deps/perl-timedate.xml"/>
+
+  <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
     href="perl-deps/perl-try-tiny.xml"/>
 
Index: general/prog/perl-deps/perl-alien-build.xml
===================================================================
--- general/prog/perl-deps/perl-alien-build.xml	(revision bf88d466fb968b10a9fe53d374fc5dd0c658d236)
+++ general/prog/perl-deps/perl-alien-build.xml	(revision 2d0650bce904fdc18a88952533c19fafc3c7b82a)
@@ -6,5 +6,5 @@
 
   <!ENTITY my-download-http "&metacpan_authors;/P/PL/PLICEASE/Alien-Build-&Alien-Build-version;.tar.gz">
-  <!ENTITY my-md5sum "943034c27609bfea81c5b32d56ac0fc8">
+  <!ENTITY my-md5sum "514f1502e8b3fb67894dbb0693212e4f">
 
 ]>
Index: general/prog/perl-deps/perl-alien-libxml2.xml
===================================================================
--- general/prog/perl-deps/perl-alien-libxml2.xml	(revision bf88d466fb968b10a9fe53d374fc5dd0c658d236)
+++ general/prog/perl-deps/perl-alien-libxml2.xml	(revision 2d0650bce904fdc18a88952533c19fafc3c7b82a)
@@ -6,5 +6,5 @@
 
   <!ENTITY my-download-http "&metacpan_authors;/P/PL/PLICEASE/Alien-Libxml2-&Alien-Libxml2-version;.tar.gz">
-  <!ENTITY my-md5sum "aba5e584f75d9d7a5205738adb4a4308">
+  <!ENTITY my-md5sum "e67c88bb1f9fda9b3ac5cef1d143579a">
 
 ]>
Index: general/prog/perl-deps/perl-config-autoconf.xml
===================================================================
--- general/prog/perl-deps/perl-config-autoconf.xml	(revision bf88d466fb968b10a9fe53d374fc5dd0c658d236)
+++ general/prog/perl-deps/perl-config-autoconf.xml	(revision 2d0650bce904fdc18a88952533c19fafc3c7b82a)
@@ -6,5 +6,5 @@
 
   <!ENTITY my-download-http "&metacpan_authors;/R/RE/REHSACK/Config-AutoConf-&Config-AutoConf-version;.tar.gz">
-  <!ENTITY my-md5sum "29f87fc7803f1725f6daafcf416089ce">
+  <!ENTITY my-md5sum "0bea721ad3996e20324b84b3b924ec71">
 
 ]>
@@ -47,5 +47,6 @@
       <bridgehead renderas="sect5">Required</bridgehead>
       <para role="required">
-        <xref linkend="perl-capture-tiny"/>
+        <xref linkend="perl-capture-tiny"/>,
+        <xref linkend="perl-file-slurper"/>
       </para>
 
Index: general/prog/perl-deps/perl-datetime-locale.xml
===================================================================
--- general/prog/perl-deps/perl-datetime-locale.xml	(revision bf88d466fb968b10a9fe53d374fc5dd0c658d236)
+++ general/prog/perl-deps/perl-datetime-locale.xml	(revision 2d0650bce904fdc18a88952533c19fafc3c7b82a)
@@ -6,5 +6,5 @@
 
   <!ENTITY my-download-http "&metacpan_authors;/D/DR/DROLSKY/DateTime-Locale-&DateTime-Locale-version;.tar.gz">
-  <!ENTITY my-md5sum "e8efaa5d7188ea24d148028249f3ec45">
+  <!ENTITY my-md5sum "5a733800022bf1fc42d5ea6561846f47">
 
 ]>
Index: general/prog/perl-deps/perl-datetime-timezone.xml
===================================================================
--- general/prog/perl-deps/perl-datetime-timezone.xml	(revision bf88d466fb968b10a9fe53d374fc5dd0c658d236)
+++ general/prog/perl-deps/perl-datetime-timezone.xml	(revision 2d0650bce904fdc18a88952533c19fafc3c7b82a)
@@ -6,5 +6,5 @@
 
   <!ENTITY my-download-http "&metacpan_authors;/D/DR/DROLSKY/DateTime-TimeZone-&DateTime-TimeZone-version;.tar.gz">
-  <!ENTITY my-md5sum "dbf6b1a6ba66a33f4f075fec361d8eab">
+  <!ENTITY my-md5sum "b1a4abd18318007ac6a4426294797b59">
 
 ]>
Index: general/prog/perl-deps/perl-ffi-checklib.xml
===================================================================
--- general/prog/perl-deps/perl-ffi-checklib.xml	(revision bf88d466fb968b10a9fe53d374fc5dd0c658d236)
+++ general/prog/perl-deps/perl-ffi-checklib.xml	(revision 2d0650bce904fdc18a88952533c19fafc3c7b82a)
@@ -6,5 +6,5 @@
 
   <!ENTITY my-download-http "&metacpan_authors;/P/PL/PLICEASE/FFI-CheckLib-&FFI-CheckLib-version;.tar.gz">
-  <!ENTITY my-md5sum "18f13e7df806389ae2ad88ccb0139bc3">
+  <!ENTITY my-md5sum "280580d962ba5f309c3d888ca7eb524b">
 
 ]>
Index: general/prog/perl-deps/perl-http-cookies.xml
===================================================================
--- general/prog/perl-deps/perl-http-cookies.xml	(revision bf88d466fb968b10a9fe53d374fc5dd0c658d236)
+++ general/prog/perl-deps/perl-http-cookies.xml	(revision 2d0650bce904fdc18a88952533c19fafc3c7b82a)
@@ -6,5 +6,5 @@
 
   <!ENTITY my-download-http "&metacpan_authors;/O/OA/OALDERS/HTTP-Cookies-&HTTP-Cookies-version;.tar.gz">
-  <!ENTITY my-md5sum "7bf1e277bd5c886bc18d21eb8423b65f">
+  <!ENTITY my-md5sum "8c663710244e70c85775393a8f5be443">
 
 ]>
Index: general/prog/perl-deps/perl-http-date.xml
===================================================================
--- general/prog/perl-deps/perl-http-date.xml	(revision bf88d466fb968b10a9fe53d374fc5dd0c658d236)
+++ general/prog/perl-deps/perl-http-date.xml	(revision 2d0650bce904fdc18a88952533c19fafc3c7b82a)
@@ -5,6 +5,6 @@
   %general-entities;
 
-  <!ENTITY my-download-http "&metacpan_authors;/G/GA/GAAS/HTTP-Date-&HTTP-Date-version;.tar.gz">
-  <!ENTITY my-md5sum "52b7a0d5982d61be1edb217751d7daba">
+  <!ENTITY my-download-http "&metacpan_authors;/O/OA/OALDERS/HTTP-Date-&HTTP-Date-version;.tar.gz">
+  <!ENTITY my-md5sum "2ecbb3aedf6aef062605191813ca3027">
 
 ]>
@@ -43,4 +43,14 @@
       </itemizedlist>
 
+      <bridgehead renderas="sect4">HTTP::Date Dependencies</bridgehead>
+
+      <bridgehead renderas="sect5">Recommended</bridgehead>
+      <para role="recommended">
+        <!-- Time::Zone is part of TimeDate -->
+        <xref linkend="perl-timedate"/> (to allow it to recognize zones other
+        than GMT and numeric)
+
+      </para>
+
     </sect3>
 
Index: general/prog/perl-deps/perl-ipc-system-simple.xml
===================================================================
--- general/prog/perl-deps/perl-ipc-system-simple.xml	(revision bf88d466fb968b10a9fe53d374fc5dd0c658d236)
+++ general/prog/perl-deps/perl-ipc-system-simple.xml	(revision 2d0650bce904fdc18a88952533c19fafc3c7b82a)
@@ -5,6 +5,6 @@
   %general-entities;
 
-  <!ENTITY my-download-http "&metacpan_authors;/P/PJ/PJF/IPC-System-Simple-&IPC-System-Simple-version;.tar.gz">
-  <!ENTITY my-md5sum "fb49e674e1d52e8e5646d08507d7fda5">
+  <!ENTITY my-download-http "&metacpan_authors;/J/JK/JKEENAN/IPC-System-Simple-&IPC-System-Simple-version;.tar.gz">
+  <!ENTITY my-md5sum "4fc72ad2c1454b78b82d329a958def18">
 
 ]>
Index: general/prog/perl-deps/perl-libwww-perl.xml
===================================================================
--- general/prog/perl-deps/perl-libwww-perl.xml	(revision bf88d466fb968b10a9fe53d374fc5dd0c658d236)
+++ general/prog/perl-deps/perl-libwww-perl.xml	(revision 2d0650bce904fdc18a88952533c19fafc3c7b82a)
@@ -6,5 +6,5 @@
 
   <!ENTITY my-download-http "&metacpan_authors;/O/OA/OALDERS/libwww-perl-&libwww-perl-version;.tar.gz">
-  <!ENTITY my-md5sum "e6eec32d76fee9d8752efbd355e6e7bc">
+  <!ENTITY my-md5sum "e64d87052eb51bb55627c756ccdfe233">
 
 ]>
Index: general/prog/perl-deps/perl-list-someutils.xml
===================================================================
--- general/prog/perl-deps/perl-list-someutils.xml	(revision bf88d466fb968b10a9fe53d374fc5dd0c658d236)
+++ general/prog/perl-deps/perl-list-someutils.xml	(revision 2d0650bce904fdc18a88952533c19fafc3c7b82a)
@@ -6,5 +6,5 @@
 
   <!ENTITY my-download-http "&metacpan_authors;/D/DR/DROLSKY/List-SomeUtils-&List-SomeUtils-version;.tar.gz">
-  <!ENTITY my-md5sum "e799c952c24f3c990a867ef2bbed2b48">
+  <!ENTITY my-md5sum "d35e2233abcd8712792e6a3548f41181">
 
 ]>
Index: general/prog/perl-deps/perl-namespace-autoclean.xml
===================================================================
--- general/prog/perl-deps/perl-namespace-autoclean.xml	(revision bf88d466fb968b10a9fe53d374fc5dd0c658d236)
+++ general/prog/perl-deps/perl-namespace-autoclean.xml	(revision 2d0650bce904fdc18a88952533c19fafc3c7b82a)
@@ -6,5 +6,5 @@
 
   <!ENTITY my-download-http "&metacpan_authors;/E/ET/ETHER/namespace-autoclean-&namespace-autoclean-version;.tar.gz">
-  <!ENTITY my-md5sum "9746a73c34f294d663c583f857b8648f">
+  <!ENTITY my-md5sum "39b38c776cd1f0ee03cc70781a2f2798">
 
 ]>
@@ -52,6 +52,11 @@
         <!-- namespace-clean pulls in b-hooks-endofscope which this requires -->
         <xref linkend="perl-sub-identify"/>
-        <!-- for the testsuite, test-requires is pulled in via b-hooks-endofscope
-          which pulls in module-implementation -->
+
+      </para>
+
+      <bridgehead renderas="sect5">Recommended (required for the testsuite)</bridgehead>
+      <para role="recommended">
+        <xref linkend="perl-test-needs"/>
+
       </para>
 
Index: general/prog/perl-deps/perl-path-tiny.xml
===================================================================
--- general/prog/perl-deps/perl-path-tiny.xml	(revision bf88d466fb968b10a9fe53d374fc5dd0c658d236)
+++ general/prog/perl-deps/perl-path-tiny.xml	(revision 2d0650bce904fdc18a88952533c19fafc3c7b82a)
@@ -6,5 +6,5 @@
 
   <!ENTITY my-download-http "&metacpan_authors;/D/DA/DAGOLDEN/Path-Tiny-&Path-Tiny-version;.tar.gz">
-  <!ENTITY my-md5sum "1a7fbdccc4585074ce4419b7bec0966c">
+  <!ENTITY my-md5sum "bf2a021d653d7252a39c0d31b41a7c6e">
 
 ]>
Index: general/prog/perl-deps/perl-role-tiny.xml
===================================================================
--- general/prog/perl-deps/perl-role-tiny.xml	(revision bf88d466fb968b10a9fe53d374fc5dd0c658d236)
+++ general/prog/perl-deps/perl-role-tiny.xml	(revision 2d0650bce904fdc18a88952533c19fafc3c7b82a)
@@ -6,5 +6,5 @@
 
   <!ENTITY my-download-http "&metacpan_authors;/H/HA/HAARG/Role-Tiny-&Role-Tiny-version;.tar.gz">
-  <!ENTITY my-md5sum "b1c5019b300d8acf7d6ddb7f312814fd">
+  <!ENTITY my-md5sum "98446826608b1e943e65c1f6e35942fe">
 
 ]>
Index: general/prog/perl-deps/perl-timedate.xml
===================================================================
--- general/prog/perl-deps/perl-timedate.xml	(revision 2d0650bce904fdc18a88952533c19fafc3c7b82a)
+++ general/prog/perl-deps/perl-timedate.xml	(revision 2d0650bce904fdc18a88952533c19fafc3c7b82a)
@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
+   "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
+  <!ENTITY % general-entities SYSTEM "../../../general.ent">
+  %general-entities;
+
+  <!ENTITY my-download-http "&metacpan_authors;/A/AT/ATOOMIC/TimeDate-&TimeDate-version;.tar.gz">
+  <!ENTITY my-md5sum "230d361a13eae79dfe3fb650acece511">
+
+]>
+
+  <!-- Begin TimeDate -->
+  <sect2 id="perl-timedate" xreflabel="TimeDate-&TimeDate-version;">
+
+    <title>TimeDate-&TimeDate-version;</title>
+
+    <indexterm zone="perl-timedate">
+      <primary sortas="a-TimeDate">TimeDate</primary>
+    </indexterm>
+
+    <sect3 role="package">
+      <title>Introduction to TimeDate</title>
+
+      <para>
+        TimeDate provides miscellaneous timezone manipulation routines.
+      </para>
+
+      &lfs90_checked;
+
+      <bridgehead renderas="sect4">Package Information</bridgehead>
+      <itemizedlist spacing="compact">
+        <listitem>
+          <para>
+            Download (HTTP): <ulink url="&my-download-http;"/>
+          </para>
+        </listitem>
+        <listitem>
+          <para>
+            Download MD5 sum: &my-md5sum;
+          </para>
+        </listitem>
+      </itemizedlist>
+
+    </sect3>
+
+    <sect3 role="installation">
+      <title>Installation of TimeDate</title>
+
+      <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+                  href="../../../xincludes/perl-standard-install.xml"/>
+
+    </sect3>
+
+  </sect2>
Index: introduction/welcome/changelog.xml
===================================================================
--- introduction/welcome/changelog.xml	(revision bf88d466fb968b10a9fe53d374fc5dd0c658d236)
+++ introduction/welcome/changelog.xml	(revision 2d0650bce904fdc18a88952533c19fafc3c7b82a)
@@ -45,4 +45,13 @@
       <para>February 7th, 2020</para>
       <itemizedlist>
+        <listitem>
+          <para>[ken] - Update perl module dependencies used by biber:
+          Alien::Build-2.00, Alien::Libxml2-0.12, Config::AutoConf-0.318,
+          DateTime::Locale-1.25, DateTime::TimeZone-2.38, FFI::CheckLib-0.26,
+          HTTP::Cookies-6.08, HTTP::Date-6.05 with new dependency of
+          TimeDate-2.31, IPC::System::Simple-1.26, libwww::perl-6.43,
+          List::SomeUtils-0.58, namespace::autoclean-0.29, Path::Tiny-0.112,
+          Role::Tiny-2.001004.</para>
+        </listitem>
         <listitem>
           <para>[bdubbs] - Update to nano-4.8. Fixes
Index: packages.ent
===================================================================
--- packages.ent	(revision bf88d466fb968b10a9fe53d374fc5dd0c658d236)
+++ packages.ent	(revision 2d0650bce904fdc18a88952533c19fafc3c7b82a)
@@ -388,5 +388,5 @@
 <!ENTITY File-Which-version           "1.23">
 <!ENTITY HTML-Parser-version          "3.72">
-<!ENTITY HTTP-Daemon-version          "6.05">
+<!ENTITY HTTP-Daemon-version          "6.06">
 <!ENTITY IO-Socket-SSL-version        "2.066">
 <!ENTITY IO-String-version            "1.08">
@@ -422,6 +422,6 @@
     get automatically checked for newer versions -->
 <!ENTITY Algorithm-Diff-version       "1.1903">
-<!ENTITY Alien-Libxml2-version        "0.09">
-<!ENTITY Alien-Build-version          "1.79">
+<!ENTITY Alien-Build-version          "2.00">
+<!ENTITY Alien-Libxml2-version        "0.12">
 <!ENTITY B-Hooks-EndOfScope-version   "0.24">
 <!ENTITY Business-ISBN-Data-version   "20191107">
@@ -433,10 +433,10 @@
 <!ENTITY Class-Tiny-version           "1.006">
 <!ENTITY Clone-version                "0.43">
-<!ENTITY Config-AutoConf-version      "0.317">
+<!ENTITY Config-AutoConf-version      "0.318">
 <!ENTITY CPAN-Meta-Check-version      "0.014">
 <!ENTITY DateTime-version             "1.51">
 <!ENTITY DateTime-Format-Strptime-version "1.76">
-<!ENTITY DateTime-Locale-version      "1.24">
-<!ENTITY DateTime-TimeZone-version    "2.36">
+<!ENTITY DateTime-Locale-version      "1.25">
+<!ENTITY DateTime-TimeZone-version    "2.38">
 <!ENTITY Devel-StackTrace-version     "2.04">
 <!ENTITY Dist-CheckConflicts-version  "0.11">
@@ -446,5 +446,5 @@
 <!ENTITY Exporter-Tiny-version        "1.002001">
 <!ENTITY ExtUtils-LibBuilder-version  "0.08">
-<!ENTITY FFI-CheckLib-version         "0.25">
+<!ENTITY FFI-CheckLib-version         "0.26">
 <!ENTITY File-chdir-version           "0.1010">
 <!ENTITY File-Copy-Recursive-version  "0.45">
@@ -454,14 +454,14 @@
 <!ENTITY File-ShareDir-Install-version "0.13">
 <!ENTITY HTML-Tagset-version          "3.20">
-<!ENTITY HTTP-Cookies-version         "6.04">
-<!ENTITY HTTP-Date-version            "6.02">
+<!ENTITY HTTP-Cookies-version         "6.08">
+<!ENTITY HTTP-Date-version            "6.05">
 <!ENTITY HTTP-Message-version         "6.18">
 <!ENTITY HTTP-Negotiate-version       "6.01">
 <!ENTITY Importer-version             "0.025">
 <!ENTITY IO-HTML-version              "1.001">
-<!ENTITY IPC-System-Simple-version    "1.25">
-<!ENTITY libwww-perl-version          "6.39">
+<!ENTITY IPC-System-Simple-version    "1.26">
+<!ENTITY libwww-perl-version          "6.43">
 <!ENTITY List-MoreUtils-XS-version    "0.428">
-<!ENTITY List-SomeUtils-version       "0.56">
+<!ENTITY List-SomeUtils-version       "0.58">
 <!ENTITY List-SomeUtils-XS-version    "0.58">
 <!ENTITY List-UtilsBy-version         "0.11">
@@ -472,5 +472,5 @@
 <!ENTITY Module-Runtime-version       "0.016">
 <!ENTITY MRO-Compat-version           "0.13">
-<!ENTITY namespace-autoclean-version  "0.28">
+<!ENTITY namespace-autoclean-version  "0.29">
 <!ENTITY namespace-clean-version      "0.27">
 <!ENTITY Net-HTTP-version             "6.19">
@@ -480,6 +480,6 @@
 <!ENTITY Params-Validate-version      "1.29">
 <!ENTITY Params-ValidationCompiler-version "0.30">
-<!ENTITY Path-Tiny-version            "0.108">
-<!ENTITY Role-Tiny-version            "2.000008">
+<!ENTITY Path-Tiny-version            "0.112">
+<!ENTITY Role-Tiny-version            "2.001004">
 <!ENTITY Scope-Guard-version          "0.21">
 <!ENTITY Specio-version               "0.43">
@@ -511,4 +511,5 @@
 <!ENTITY Text-Glob-version            "0.11">
 <!ENTITY Tie-Cycle-version            "1.225">
+<!ENTITY TimeDate-version             "2.31">
 <!ENTITY Try-Tiny-version             "0.30">
 <!ENTITY Variable-Magic-version       "0.62">
