diff --git a/README.md b/README.md
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@@ -1,2 +1,4 @@
 # ruby-nokogiri
 
+An HTML, XML, SAX, and Reader parser.
+
diff --git a/nokogiri-1.13.4.gem b/nokogiri-1.13.4.gem
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diff --git a/ruby-nokogiri.spec b/ruby-nokogiri.spec
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+Name:          ruby-nokogiri
+Version:       1.13.4
+Release:       1mamba
+Summary:       An HTML, XML, SAX, and Reader parser
+Group:         System/Libraries
+Vendor:        openmamba
+Distribution:  openmamba
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
+URL:           https://nokogiri.org
+Source:        https://rubygems.org/downloads/nokogiri-%{version}.gem
+License:       MIT
+## AUTOBUILDREQ-BEGIN
+BuildRequires: glibc-devel
+BuildRequires: liblzma-devel
+BuildRequires: libruby-devel
+BuildRequires: libz-devel
+## AUTOBUILDREQ-END
+BuildRequires: ruby-devel
+BuildRequires: ruby-mini_portile2
+Requires:      ruby
+
+%description
+An HTML, XML, SAX, and Reader parser.
+
+%prep
+%setup -q -c
+
+%build
+
+%install
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+
+gemdir="$(ruby -rrubygems -e'puts Gem.default_dir')"
+gem install --no-user-install --ignore-dependencies -i "%{buildroot}$gemdir" -n "%{buildroot}/usr/bin" %{SOURCE0}
+rm -rf %{buildroot}${gemdir}/cache
+
+%clean
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+
+%files
+%defattr(-,root,root)
+%{_bindir}/nokogiri
+%dir %{_libdir}/ruby/gems/*/extensions/*/*/nokogiri-%{version}
+%{_libdir}/ruby/gems/*/extensions/*/*/nokogiri-%{version}/*
+%dir %{_libdir}/ruby/gems/*/doc/nokogiri-%{version}
+%{_libdir}/ruby/gems/*/doc/nokogiri-%{version}/*
+%dir %{_libdir}/ruby/gems/*/gems/nokogiri-%{version}
+%{_libdir}/ruby/gems/*/gems/nokogiri-%{version}/*
+%{_libdir}/ruby/gems/*/specifications/nokogiri-%{version}.gemspec
+%doc nokogiri-%{version}/LICENSE.md
+
+%changelog
+* Sun Apr 24 2022 Automatic Build System <autodist@mambasoft.it> 1.13.4-1mamba
+- automatic version update by autodist
+
+* Sat Apr 23 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 1.13.3-1mamba
+- package created using the webbuild interface