diff --git a/README.md b/README.md
index 8febcc5..5c2092f 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,8 @@
 # perl-Test-Number-Delta
 
 At some point or another, most programmers find they need to compare floating-point numbers for equality. The typical idiom is to test if the absolute value of the difference of the numbers is within a desired tolerance, usually called epsilon. This module provides such a function for use with Test::Harness. Usage is similar to other test functions described in Test::More. Semantically, the delta_within function replaces this kind of construct:
-
  ok ( abs($p - $q) < $epsilon, '$p is equal to $q' ) or
      diag "$p is not equal to $q to within $epsilon";
-
 While there's nothing wrong with that construct, it's painful to type it repeatedly in a test script. This module does the same thing with a single function call. The delta_ok function is similar, but either uses a global default value for epsilon or else calculates a 'relative' epsilon on the fly so that epsilon is scaled automatically to the size of the arguments to delta_ok. Both functions are exported automatically.
-
 Because checking floating-point equality is not always reliable, it is not possible to check the 'equal to' boundary of 'less than or equal to epsilon'. Therefore, Test::Number::Delta only compares if the absolute value of the difference is less than epsilon (for equality tests) or greater than epsilon (for inequality tests).
 
diff --git a/perl-Test-Number-Delta.spec b/perl-Test-Number-Delta.spec
index 6c5b0f3..cb291fa 100644
--- a/perl-Test-Number-Delta.spec
+++ b/perl-Test-Number-Delta.spec
@@ -1,67 +1,62 @@
 %define perl_major_ver %(eval `perl -V:version`; echo ${version%*.[0-9]*}.0)
 
 Name:          perl-Test-Number-Delta
-Version:       1.03
-Release:       3mamba
+Version:       1.06
+Release:       1mamba
 Summary:       Test::Number::Delta - Compare the difference between numbers against a given tolerance
 Group:         System/Libraries/Perl
 Vendor:        openmamba
 Distribution:  openmamba
-Packager:      Automatic Build System <autodist@mambasoft.it>
-URL:           http://www.cpan.org
-Source:        http://search.cpan.org/CPAN/authors/id/D/DA/DAGOLDEN/Test-Number-Delta-%{version}.tar.gz
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
+URL:           https://www.cpan.org/
+Source:        https://cpan.metacpan.org/modules/by-module/Test/Test-Number-Delta-%{version}.tar.gz
 License:       GPL, Artistic
-Requires:      perl >= %perl_major_ver
+## AUTOBUILDREQ-BEGIN
+BuildRequires: perl-devel
+## AUTOBUILDREQ-END
 BuildRequires: perl-devel >= %perl_major_ver
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
+Requires:      perl >= %perl_major_ver
 
 %description
 At some point or another, most programmers find they need to compare floating-point numbers for equality. The typical idiom is to test if the absolute value of the difference of the numbers is within a desired tolerance, usually called epsilon. This module provides such a function for use with Test::Harness. Usage is similar to other test functions described in Test::More. Semantically, the delta_within function replaces this kind of construct:
-
  ok ( abs($p - $q) < $epsilon, '$p is equal to $q' ) or
      diag "$p is not equal to $q to within $epsilon";
-
 While there's nothing wrong with that construct, it's painful to type it repeatedly in a test script. This module does the same thing with a single function call. The delta_ok function is similar, but either uses a global default value for epsilon or else calculates a 'relative' epsilon on the fly so that epsilon is scaled automatically to the size of the arguments to delta_ok. Both functions are exported automatically.
-
 Because checking floating-point equality is not always reliable, it is not possible to check the 'equal to' boundary of 'less than or equal to epsilon'. Therefore, Test::Number::Delta only compares if the absolute value of the difference is less than epsilon (for equality tests) or greater than epsilon (for inequality tests).
 
 %prep
-
 %setup -q -n Test-Number-Delta-%{version}
 
 %build
-perl Build.PL installdirs=vendor
-./Build
-./Build test
+%{__perl} Makefile.PL PREFIX=%{_prefix} INSTALLDIRS=vendor OPTIMIZE="%{optflags}"
+
+%make
+%make test
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
-./Build install \
-   destdir="%{buildroot}" \
-   --install_path bindoc="%{_mandir}/man1" \
-   --install_path libdoc="%{_mandir}/man3"
+%makeinstall_perl
 
 packlist=`find %{buildroot} -name .packlist`
 [ -z "$packlist" ] && exit 1 || cat $packlist | \
-   sed "s,%buildroot,,g;s,.*/man/.*,&.gz,g" | \
-   sort -u > .packlist && rm $packlist
-
-find %{buildroot}%{perl_vendorlib} \
-   -type d -depth -exec rmdir {} 2>/dev/null \;
+   sed "s,%{buildroot},,g;s,.*/man/.*,&.gz,g" | \
+   sort -u > .packlist && rm -f $packlist
 
 strid=`echo $packlist | sed 's,.*auto\(.*\)/.packlist,\1,'`
 for dir in `find %{buildroot} -type d | grep $strid`; do
-   echo %dir ${dir#%buildroot} >> .packlist
+   echo "%dir ${dir#%buildroot}" >> .packlist
 done
 
 %clean
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
-rm -f .packlist
 
 %files -f .packlist
 %defattr(-,root,root)
 
 %changelog
+* Sun May 16 2021 Automatic Build System <autodist@mambasoft.it> 1.06-1mamba
+- automatic version update by autodist
+
 * Thu Aug 29 2013 Automatic Build System <autodist@mambasoft.it> 1.03-3mamba
 - automatic rebuild by autodist