diff --git a/perl-Date-Pcalc.spec b/perl-Date-Pcalc.spec
index 02f12d6..bcf128e 100644
--- a/perl-Date-Pcalc.spec
+++ b/perl-Date-Pcalc.spec
@@ -2,34 +2,38 @@
 
 Name:          perl-Date-Pcalc
 Version:       6.1
-Release:       3mamba
+Release:       4mamba
 Summary:       Date::Pcalc - Gregorian calendar date calculations
 Group:         System/Libraries/Perl
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           http://www.cpan.org
+URL:           https://www.cpan.org/
 Source:        http://search.cpan.org/CPAN/authors/id/S/ST/STBEY/Date-Pcalc-%{version}.tar.gz
 Patch1:        perl-Date-Pcalc-6.1-perl-5.16.patch
 License:       Artistic, GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
-BuildRequires: perl-Bit-Vector
+BuildRequires: libperl
+BuildRequires: perl(Bit::Vector)
 BuildRequires: perl-Carp-Clan
 BuildRequires: perl-devel
 ## AUTOBUILDREQ-END
+BuildRequires: perl >= 2:5.36.0
 Requires:      perl >= %perl_major_ver
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
 Date::Pcalc - Gregorian calendar date calculations
 
 %prep
 %setup -q -n Date-Pcalc-%{version}
-%patch1 -p1
+%patch 1 -p1
 
 %build
-perl Makefile.PL PREFIX=%{_prefix} INSTALLDIRS=vendor
+perl Makefile.PL PREFIX=%{_prefix} INSTALLDIRS=vendor << _EOF
+
+_EOF
+
 %make
 #% make test
 
@@ -46,6 +50,8 @@ for dir in `find %{buildroot} -type d | grep $strid`; do
    echo "%dir ${dir#%buildroot}" >> .packlist
 done
 
+find %{buildroot} -name *.so -exec chmod u+w {} \;
+
 %clean
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
 rm -f .packlist
@@ -54,6 +60,9 @@ rm -f .packlist
 %defattr(-,root,root)
 
 %changelog
+* Sun Apr 16 2023 Sdk Build System <sdk@mambasoft.it> 6.1-4mamba
+- rebuilt with perl 5.36.0
+
 * Wed Nov 09 2016 Silvan Calarco <silvan.calarco@mambasoft.it> 6.1-3mamba
 - rebuilt with perl 5.24