diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b207a70
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+SOURCES/threads-2.21.tar.gz
diff --git a/.perl-threads.metadata b/.perl-threads.metadata
new file mode 100644
index 0000000..807d153
--- /dev/null
+++ b/.perl-threads.metadata
@@ -0,0 +1 @@
+bb9641a3e581315e718c05e572984c4ab470b0f9 SOURCES/threads-2.21.tar.gz
diff --git a/SOURCES/threads-2.21-Upgrade-to-2.22.patch b/SOURCES/threads-2.21-Upgrade-to-2.22.patch
new file mode 100644
index 0000000..bc0e53a
--- /dev/null
+++ b/SOURCES/threads-2.21-Upgrade-to-2.22.patch
@@ -0,0 +1,82 @@
+From a0eaa97e59b5b2ad8e2a83f8509da3787ff4b4bf Mon Sep 17 00:00:00 2001
+From: Jitka Plesnikova <jplesnik@redhat.com>
+Date: Thu, 24 May 2018 11:32:01 +0200
+Subject: [PATCH] Upgrade to 2.22
+
+---
+ lib/threads.pm | 29 ++++++++++++++++++++++++++++-
+ threads.xs | 4 ++++
+ 2 files changed, 32 insertions(+), 1 deletion(-)
+
+diff --git a/lib/threads.pm b/lib/threads.pm
+index 2eb926a..1b99567 100644
+--- a/lib/threads.pm
++++ b/lib/threads.pm
+@@ -5,7 +5,7 @@ use 5.008;
+ use strict;
+ use warnings;
+
+-our $VERSION = '2.21'; # remember to update version in POD!
++our $VERSION = '2.22'; # remember to update version in POD!
+ my $XS_VERSION = $VERSION;
+ $VERSION = eval $VERSION;
+
+@@ -937,6 +937,33 @@ C<chdir()>) will affect all the threads in the application.
+ On MSWin32, each thread maintains its own the current working directory
+ setting.
+
++=item Locales
++
++Prior to Perl 5.28, locales could not be used with threads, due to various
++race conditions. Starting in that release, on systems that implement
++thread-safe locale functions, threads can be used, with some caveats.
++This includes Windows starting with Visual Studio 2005, and systems compatible
++with POSIX 2008. See L<perllocale/Multi-threaded operation>.
++
++Each thread (except the main thread) is started using the C locale. The main
++thread is started like all other Perl programs; see L<perllocale/ENVIRONMENT>.
++You can switch locales in any thread as often as you like.
++
++If you want to inherit the parent thread's locale, you can, in the parent, set
++a variable like so:
++
++ $foo = POSIX::setlocale(LC_ALL, NULL);
++
++and then pass to threads->create() a sub that closes over C<$foo>. Then, in
++the child, you say
++
++ POSIX::setlocale(LC_ALL, $foo);
++
++Or you can use the facilities in L<threads::shared> to pass C<$foo>;
++or if the environment hasn't changed, in the child, do
++
++ POSIX::setlocale(LC_ALL, "");
++
+ =item Environment variables
+
+ Currently, on all platforms except MSWin32, all I<system> calls (e.g., using
+diff --git a/threads.xs b/threads.xs
+index 4e9e31f..3da9165 100644
+--- a/threads.xs
++++ b/threads.xs
+@@ -580,6 +580,8 @@ S_ithread_run(void * arg)
+ S_set_sigmask(&thread->initial_sigmask);
+ #endif
+
++ thread_locale_init();
++
+ PL_perl_destruct_level = 2;
+
+ {
+@@ -665,6 +667,8 @@ S_ithread_run(void * arg)
+ MUTEX_UNLOCK(&thread->mutex);
+ MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex);
+
++ thread_locale_term();
++
+ /* Exit application if required */
+ if (exit_app) {
+ (void)S_jmpenv_run(aTHX_ 2, thread, NULL, &exit_app, &exit_code);
+--
+2.14.3
+
diff --git a/SPECS/perl-threads.spec b/SPECS/perl-threads.spec
new file mode 100644
index 0000000..672b55c
--- /dev/null
+++ b/SPECS/perl-threads.spec
@@ -0,0 +1,263 @@
+%global base_version 2.21
+Name: perl-threads
+Epoch: 1
+Version: 2.22
+Release: 439%{?dist}
+Summary: Perl interpreter-based threads
+License: GPL+ or Artistic
+URL: https://metacpan.org/release/threads
+Source0: https://cpan.metacpan.org/authors/id/J/JD/JDHEDDEN/threads-%{base_version}.tar.gz
+# Unbundled from perl 5.28.0
+Patch0: threads-2.21-Upgrade-to-2.22.patch
+BuildRequires: coreutils
+BuildRequires: findutils
+BuildRequires: gcc
+BuildRequires: make
+BuildRequires: perl-devel
+BuildRequires: perl-generators
+BuildRequires: perl-interpreter
+BuildRequires: perl(Config)
+BuildRequires: perl(ExtUtils::MakeMaker) >= 6.76
+BuildRequires: perl(File::Spec)
+BuildRequires: perl(strict)
+BuildRequires: perl(warnings)
+# Run-time:
+BuildRequires: perl(Carp)
+BuildRequires: perl(overload)
+BuildRequires: perl(XSLoader)
+# Tests only:
+BuildRequires: perl(Cwd)
+BuildRequires: perl(ExtUtils::testlib)
+BuildRequires: perl(File::Path)
+BuildRequires: perl(Hash::Util)
+BuildRequires: perl(IO::File)
+BuildRequires: perl(POSIX)
+BuildRequires: perl(Test::More)
+# Optional tests:
+BuildRequires: perl(Thread::Queue)
+BuildRequires: perl(Thread::Semaphore)
+BuildRequires: perl(threads::shared)
+Requires: perl(:MODULE_COMPAT_%(eval "`perl -V:version`"; echo $version))
+Requires: perl(Carp)
+
+%{?perl_default_filter}
+
+%description
+Since Perl 5.8, thread programming has been available using a model called
+interpreter threads which provides a new Perl interpreter for each thread,
+and, by default, results in no data or state information being shared
+between threads.
+
+(Prior to Perl 5.8, 5005threads was available through the "Thread.pm" API.
+This threading model has been deprecated, and was removed as of Perl 5.10.0.)
+
+%prep
+%setup -q -n threads-%{base_version}
+%patch0 -p1
+chmod -x examples/*
+
+%build
+perl Makefile.PL INSTALLDIRS=vendor NO_PACKLIST=1 OPTIMIZE="$RPM_OPT_FLAGS"
+make %{?_smp_mflags}
+
+%install
+make pure_install DESTDIR=$RPM_BUILD_ROOT
+find $RPM_BUILD_ROOT -type f -name '*.bs' -size 0 -delete
+%{_fixperms} $RPM_BUILD_ROOT/*
+
+%check
+make test
+
+%files
+%doc Changes examples README
+%{perl_vendorarch}/auto/*
+%{perl_vendorarch}/threads*
+%{_mandir}/man3/*
+
+%changelog
+* Fri Jul 26 2019 Fedora Release Engineering <releng@fedoraproject.org> - 1:2.22-439
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild
+
+* Thu May 30 2019 Jitka Plesnikova <jplesnik@redhat.com> - 1:2.22-438
+- Increase release to favour standalone package
+
+* Sat Feb 02 2019 Fedora Release Engineering <releng@fedoraproject.org> - 1:2.22-418
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild
+
+* Fri Jul 13 2018 Fedora Release Engineering <releng@fedoraproject.org> - 1:2.22-417
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_29_Mass_Rebuild
+
+* Wed Jun 27 2018 Jitka Plesnikova <jplesnik@redhat.com> - 1:2.22-416
+- Upgrade to 2.22 as provided in perl-5.28.0
+- Perl 5.28 rebuild
+
+* Fri Feb 09 2018 Fedora Release Engineering <releng@fedoraproject.org> - 1:2.21-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild
+
+* Wed Jan 24 2018 Petr Pisar <ppisar@redhat.com> - 1:2.21-1
+- 2.21 bump
+
+* Thu Aug 03 2017 Fedora Release Engineering <releng@fedoraproject.org> - 1:2.16-4
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Binutils_Mass_Rebuild
+
+* Thu Jul 27 2017 Fedora Release Engineering <releng@fedoraproject.org> - 1:2.16-3
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Mass_Rebuild
+
+* Wed Jun 07 2017 Jitka Plesnikova <jplesnik@redhat.com> - 1:2.16-2
+- Perl 5.26 re-rebuild of bootstrapped packages
+
+* Mon Jun 05 2017 Petr Pisar <ppisar@redhat.com> - 1:2.16-1
+- 2.16 bump
+
+* Sat Jun 03 2017 Jitka Plesnikova <jplesnik@redhat.com> - 1:2.15-393
+- Perl 5.26 rebuild
+
+* Mon Feb 27 2017 Petr Pisar <ppisar@redhat.com> - 1:2.15-1
+- 2.15 bump
+
+* Sat Feb 11 2017 Fedora Release Engineering <releng@fedoraproject.org> - 1:2.12-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_26_Mass_Rebuild
+
+* Mon Jan 02 2017 Petr Pisar <ppisar@redhat.com> - 1:2.12-1
+- 2.12 bump
+
+* Mon May 23 2016 Petr Pisar <ppisar@redhat.com> - 1:2.09-1
+- 2.09 bump
+
+* Wed May 18 2016 Jitka Plesnikova <jplesnik@redhat.com> - 1:2.08-3
+- Perl 5.24 rebuild
+
+* Wed May 18 2016 Jitka Plesnikova <jplesnik@redhat.com> - 1:2.08-2
+- Perl 5.24 rebuild
+
+* Tue May 17 2016 Petr Pisar <ppisar@redhat.com> - 1:2.08-1
+- 2.08 bump
+
+* Sat May 14 2016 Jitka Plesnikova <jplesnik@redhat.com> - 1:2.07-365
+- Increase release to favour standalone package
+
+* Mon May 02 2016 Petr Pisar <ppisar@redhat.com> - 1:2.07-1
+- 2.07 bump
+
+* Thu Feb 04 2016 Fedora Release Engineering <releng@fedoraproject.org> - 1:2.02-3
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_24_Mass_Rebuild
+
+* Thu Jun 18 2015 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1:2.02-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_23_Mass_Rebuild
+
+* Mon Jun 15 2015 Petr Pisar <ppisar@redhat.com> - 1:2.02-1
+- 2.02 bump
+
+* Thu Jun 04 2015 Jitka Plesnikova <jplesnik@redhat.com> - 1:2.01-345
+- Increase release to favour standalone package
+
+* Wed Jun 03 2015 Jitka Plesnikova <jplesnik@redhat.com> - 1:2.01-2
+- Perl 5.22 rebuild
+
+* Fri Mar 13 2015 Petr Pisar <ppisar@redhat.com> - 1:2.01-1
+- 2.01 bump
+
+* Mon Mar 09 2015 Petr Pisar <ppisar@redhat.com> - 1:1.99-1
+- 1.99 bump
+
+* Fri Mar 06 2015 Petr Pisar <ppisar@redhat.com> - 1:1.98-1
+- 1.98 bump
+
+* Thu Mar 05 2015 Petr Pisar <ppisar@redhat.com> - 1:1.97-1
+- 1.97 bump
+
+* Wed Sep 10 2014 Petr Pisar <ppisar@redhat.com> - 1:1.96-1
+- 1.96 bump
+
+* Wed Aug 27 2014 Jitka Plesnikova <jplesnik@redhat.com> - 1:1.92-4
+- Perl 5.20 rebuild
+
+* Sun Aug 17 2014 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1:1.92-3
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_21_22_Mass_Rebuild
+
+* Sat Jun 07 2014 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1:1.92-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild
+
+* Wed Feb 05 2014 Petr Pisar <ppisar@redhat.com> - 1:1.92-1
+- 1.92 bump
+
+* Wed Oct 02 2013 Petr Pisar <ppisar@redhat.com> - 1:1.89-1
+- 1.89 bump
+
+* Tue Sep 24 2013 Jitka Plesnikova <jplesnik@redhat.com> - 1:1.87-6
+- Update dependencies
+
+* Sun Aug 04 2013 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1:1.87-5
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_20_Mass_Rebuild
+
+* Fri Jul 12 2013 Petr Pisar <ppisar@redhat.com> - 1:1.87-4
+- Link minimal build-root packages against libperl.so explicitly
+
+* Fri Jul 12 2013 Petr Pisar <ppisar@redhat.com> - 1:1.87-3
+- Perl 5.18 rebuild
+
+* Fri Jul 12 2013 Petr Pisar <ppisar@redhat.com> - 1:1.87-2
+- Perl 5.18 rebuild
+
+* Fri Jul 12 2013 Petr Pisar <ppisar@redhat.com> - 1:1.87-1
+- Increase epoch to compete with perl.spec
+
+* Mon Jul 01 2013 Petr Pisar <ppisar@redhat.com> - 1.87-2
+- Specify all dependencies
+
+* Thu May 30 2013 Petr Pisar <ppisar@redhat.com> - 1.87-1
+- 1.87 bump
+
+* Tue Apr 30 2013 Petr Pisar <ppisar@redhat.com> - 1.86-243
+- Increase release number to supersede perl sub-package (bug #957931)
+
+* Thu Feb 14 2013 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1.86-242
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_19_Mass_Rebuild
+
+* Thu Nov 01 2012 Jitka Plesnikova <jplesnik@redhat.com> - 1.86-241
+- Update dependencies.
+- Use DESTDIR rather than PERL_INSTALL_ROOT
+
+* Mon Aug 13 2012 Marcela Mašláňová <mmaslano@redhat.com> - 1.86-240
+- bump release to override sub-package from perl.spec
+
+* Fri Jul 20 2012 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1.86-4
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_18_Mass_Rebuild
+
+* Wed Jun 06 2012 Petr Pisar <ppisar@redhat.com> - 1.86-3
+- Perl 5.16 rebuild
+
+* Sat Jan 14 2012 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1.86-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_17_Mass_Rebuild
+
+* Thu Dec 15 2011 Petr Pisar <ppisar@redhat.com> - 1.86-1
+- 1.86 bump
+
+* Tue Sep 06 2011 Petr Pisar <ppisar@redhat.com> - 1.85-1
+- 1.85 bump
+
+* Tue Aug 16 2011 Marcela Mašláňová <mmaslano@redhat.com> - 1.83-4
+- change path on vendor, so our debuginfo are not conflicting with
+ perl core debuginfos
+
+* Fri Jun 17 2011 Marcela Mašláňová <mmaslano@redhat.com> - 1.83-3
+- Perl mass rebuild
+
+* Thu Jun 09 2011 Marcela Mašláňová <mmaslano@redhat.com> - 1.83-2
+- Perl 5.14 mass rebuild
+
+* Tue Apr 26 2011 Petr Pisar <ppisar@redhat.com> - 1.83-1
+- 1.83 bump
+
+* Wed Feb 09 2011 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1.82-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_15_Mass_Rebuild
+
+* Mon Jan 03 2011 Petr Pisar <ppisar@redhat.com> - 1.82-1
+- 1.82 bump
+
+* Wed Oct 06 2010 Petr Pisar <ppisar@redhat.com> - 1.81-1
+- 1.81 bump
+
+* Fri Oct 01 2010 Petr Pisar <ppisar@redhat.com> 1.79-1
+- Specfile autogenerated by cpanspec 1.78.
+- Remove BuildRoot stuff