diff --git a/.gitignore b/.gitignore
index e466da7..d29be21 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,4 @@
 /tzdata2019b.tar.gz
 /tzdata2019c.tar.gz
 /tzdata2020a.tar.gz
+/tzdata2020b.tar.gz
diff --git a/perl-DateTime-TimeZone.spec b/perl-DateTime-TimeZone.spec
index dc70ab7..e1e9320 100644
--- a/perl-DateTime-TimeZone.spec
+++ b/perl-DateTime-TimeZone.spec
@@ -2,11 +2,11 @@
 %bcond_without perl_DateTime_TimeZone_enables_optional_test
 
 # Regenerate Perl library code from upstream Olson database of this date
-%global tzversion 2020a
+%global tzversion 2020b
 
 Name:           perl-DateTime-TimeZone
-Version:        2.39
-Release:        4%{?dist}
+Version:        2.41
+Release:        1%{?dist}
 Summary:        Time zone object base class and factory
 # tzdata%%{tzversion}.tar.gz archive:   Public Domain
 # other files:                          GPL+ or Artistic
@@ -23,9 +23,10 @@ Source1:        ftp://ftp.iana.org/tz/releases/tzdata%{tzversion}.tar.gz
 Patch0:         DateTime-TimeZone-2.04-Parse-etc-localtime-by-DateTime-TimeZone-Tzfile.patch
 BuildArch:      noarch
 # Build
+BuildRequires:  coreutils
 BuildRequires:  make
-BuildRequires:  perl-interpreter
 BuildRequires:  perl-generators
+BuildRequires:  perl-interpreter
 BuildRequires:  perl(ExtUtils::MakeMaker) >= 6.76
 BuildRequires:  perl(strict)
 BuildRequires:  perl(warnings)
@@ -126,11 +127,11 @@ JOBS=$(printf '%%s' "%{?_smp_mflags}" | sed 's/.*-j\([0-9][0-9]*\).*/\1/')
 perl tools/parse_olson --dir ../tzdata-%{tzversion} --version %{tzversion} \
     --jobs $JOBS --clean
 %endif
-perl Makefile.PL INSTALLDIRS=vendor NO_PACKLIST=1
-make %{?_smp_mflags}
+perl Makefile.PL INSTALLDIRS=vendor NO_PACKLIST=1 NO_PERLLOCAL=1
+%{make_build}
 
 %install
-make pure_install DESTDIR=%{buildroot}
+%{make_install}
 %{_fixperms} %{buildroot}/*
 
 %check
@@ -143,6 +144,9 @@ make test
 %{_mandir}/man3/*
 
 %changelog
+* Thu Oct 08 2020 Jitka Plesnikova <jplesnik@redhat.com> - 2.41-1
+- 2.41 bump (2020b Olson database)
+
 * Tue Jul 28 2020 Fedora Release Engineering <releng@fedoraproject.org> - 2.39-4
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild
 
diff --git a/sources b/sources
index 094f14e..8f37acc 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (DateTime-TimeZone-2.39.tar.gz) = 6f7580aa873a66d1892cd9201b5b2efd088842ffc2696e94c59c5532935be7eecea067fa979465046e0eeb35ca34e73bc49006e176445eaed91ac179beacc13b
-SHA512 (tzdata2020a.tar.gz) = 2a2fc2e3ad8a6e4c574242296c847ad582c2c1d86add9c556e65c812d19b9528522e3c4dddb5239017091825d2acc5a2ccaf21dc41b900b6c300ef4264cc5a9d
+SHA512 (DateTime-TimeZone-2.41.tar.gz) = e99c5623db67dd17008fc9ccf4e0070a1c307838b6e0e20d00b15bca02b01b723ff150d28314acad49861af8920931eee9d032b354d45dec78556cd52861c0a0
+SHA512 (tzdata2020b.tar.gz) = 27ade698e61881e637ab04834633595cfbdb08fd97177e9731093165d1268a64dffa0570b5e137b9daa4374e6c6827ed01c476074ec61ec0b9a44a7f23479be9