diff --git a/perl-Class-Singleton.changes b/perl-Class-Singleton.changes
index 25cad60..0d19669 100644
--- a/perl-Class-Singleton.changes
+++ b/perl-Class-Singleton.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Thu Feb  6 22:18:15 UTC 2025 - Tina Müller <tina.mueller@suse.com>
+
+- Normalize CPAN version
+  See https://github.com/openSUSE/cpanspec/issues/47 for details
+
 -------------------------------------------------------------------
 Thu Dec  3 03:06:07 UTC 2020 - Tina Müller <timueller+perl@suse.de>
 
diff --git a/perl-Class-Singleton.spec b/perl-Class-Singleton.spec
index aed4bfe..e9d45b4 100644
--- a/perl-Class-Singleton.spec
+++ b/perl-Class-Singleton.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package perl-Class-Singleton
 #
-# Copyright (c) 2020 SUSE LLC
+# Copyright (c) 2025 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -16,20 +16,23 @@
 #
 
 
-Name:           perl-Class-Singleton
-Version:        1.6
-Release:        0
 %define cpan_name Class-Singleton
-Summary:        Implementation of a "Singleton" class
+Name:           perl-Class-Singleton
+Version:        1.600.0
+Release:        0
+# 1.6 -> normalize -> 1.600.0
+%define cpan_version 1.6
 License:        Artistic-1.0 OR GPL-1.0-or-later
-Group:          Development/Libraries/Perl
+Summary:        Implementation of a "Singleton" class
 URL:            https://metacpan.org/release/%{cpan_name}
-Source0:        https://cpan.metacpan.org/authors/id/S/SH/SHAY/%{cpan_name}-%{version}.tar.gz
+Source0:        https://cpan.metacpan.org/authors/id/S/SH/SHAY/%{cpan_name}-%{cpan_version}.tar.gz
 Source1:        cpanspec.yml
 BuildArch:      noarch
-BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 BuildRequires:  perl
 BuildRequires:  perl-macros
+BuildRequires:  perl(ExtUtils::MakeMaker) >= 6.64
+Provides:       perl(Class::Singleton) = %{version}
+%undefine       __perllib_provides
 %{perl_requires}
 
 %description
@@ -46,11 +49,11 @@ For a description and discussion of the Singleton class, see "Design
 Patterns", Gamma et al, Addison-Wesley, 1995, ISBN 0-201-63361-2.
 
 %prep
-%setup -q -n %{cpan_name}-%{version}
+%autosetup  -n %{cpan_name}-%{cpan_version} -p1
 
 %build
 perl Makefile.PL INSTALLDIRS=vendor
-make %{?_smp_mflags}
+%make_build
 
 %check
 make test
@@ -61,7 +64,6 @@ make test
 %perl_gen_filelist
 
 %files -f %{name}.files
-%defattr(-,root,root,755)
 %doc Changes README
 %license Artistic Copying LICENCE