diff --git a/python-cssutils.spec b/python-cssutils.spec
index 48c949e..e4769fc 100644
--- a/python-cssutils.spec
+++ b/python-cssutils.spec
@@ -1,5 +1,6 @@
+%define pkgname %(echo %name | cut -d- -f2- | tr - _)
 Name:          python-cssutils
-Version:       2.3.0
+Version:       2.6.0
 Release:       1mamba
 Summary:       A Python package to parse and build CSS Cascading Style Sheets. 
 Group:         System/Libraries
@@ -12,10 +13,7 @@ License:       LGPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: libpython3-devel
 BuildRequires: python3.7dist(importlib-metadata)
-BuildRequires: python3.7dist(setuptools)
 ## AUTOBUILDREQ-END
-Provides:      cssutils
-Obsoletes:     cssutils < 2.3.0
 
 %description
 A Python package to parse and build CSS Cascading Style Sheets. Currently a DOM only, no rendering options. 
@@ -28,27 +26,34 @@ A Python package to parse and build CSS Cascading Style Sheets. Currently a DOM
 %setup -q -n cssutils-%{version}
 
 %build
-CFLAGS="%{optflags}" %{__python} setup.py build
+CFLAGS="%{optflags}" %{__python} -m build --no-isolation --wheel
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
-%{__python} setup.py install \
-   -O1 --skip-build \
-   --root="%{buildroot}" \
-   --install-headers=%{python_inc} \
-   --install-lib=%{python_sitearch} \
-   --record=%{name}.filelist
+%{__python} -m installer --destdir=%{buildroot} dist/*.whl
 
-sed -i "\,\.egg-info/,d;s,.*/man/.*,&.gz," %{name}.filelist
+%if "%{?with_pyver}" != "3"
+mv %{buildroot}%{_bindir}/csscapture{,-%{?pyappend}}
+mv %{buildroot}%{_bindir}/csscombine{,-%{?pyappend}}
+mv %{buildroot}%{_bindir}/cssparse{,-%{?pyappend}}
+%endif
 
-rm -rf %{buildroot}%{python_sitearch}/tests
-
-%files %{?pyappend} -f %{name}.filelist
+%files %{?pyappend}
 %defattr(-,root,root)
-%dir %{python_sitearch}/cssutils-%{version}-py*.egg-info
-%{python_sitearch}/cssutils-%{version}-py*.egg-info/*
+%{_bindir}/csscapture
+%{_bindir}/csscombine
+%{_bindir}/cssparse
+%dir %{python_sitelib}/%{pkgname}-%{version}.dist-info
+%{python_sitelib}/%{pkgname}-%{version}.dist-info/*
+%dir %{python_sitelib}/%{pkgname}
+%{python_sitelib}/%{pkgname}/*
+%dir %{python_sitelib}/encutils
+%{python_sitelib}/encutils/*
 
 %changelog
+* Fri Oct 07 2022 Automatic Build System <autodist@mambasoft.it> 2.6.0-1mamba
+- automatic version update by autodist
+
 * Tue Jan 11 2022 Automatic Build System <autodist@mambasoft.it> 2.3.0-1mamba
 - automatic version update by autodist