diff --git a/perl-Data-Buffer.spec b/perl-Data-Buffer.spec
index e3759a0..83f2ca3 100644
--- a/perl-Data-Buffer.spec
+++ b/perl-Data-Buffer.spec
@@ -2,18 +2,19 @@
 
 Name:          perl-Data-Buffer
 Version:       0.04
-Release:       4mamba
+Release:       5mamba
 Summary:       Data::Buffer - Read/write buffer class
 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://www.cpan.org/authors/id/B/BT/BTROTT/Data-Buffer-%{version}.tar.gz
 License:       GPL
+## AUTOBUILDREQ-BEGIN
+BuildRequires: perl-devel
+## AUTOBUILDREQ-END
 Requires:      perl >= %perl_major_ver
-BuildRequires: perl-devel >= %perl_major_ver
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
 The Data::Buffer perl module implements a low-level binary buffer in which you can get and put integers, strings, and other data.
@@ -47,6 +48,9 @@ rm -f .packlist
 %defattr(-,root,root)
 
 %changelog
+* Wed May 19 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 0.04-5mamba
+- rebuilt with specfile fixes
+
 * Tue Nov 13 2012 Silvan Calarco <silvan.calarco@mambasoft.it> 0.04-4mamba
 - perl 5.16 mass rebuild