diff --git a/python-gunicorn.spec b/python-gunicorn.spec
index 4f5b07b..94c99e4 100644
--- a/python-gunicorn.spec
+++ b/python-gunicorn.spec
@@ -1,6 +1,7 @@
+%define pkgname %(echo %name | cut -d- -f2- | tr - _)
 Name:          python-gunicorn
-Version:       21.2.0
-Release:       2mamba
+Version:       22.0.0
+Release:       1mamba
 Summary:       WSGI HTTP Server for UNIX
 Group:         System/Libraries
 Vendor:        openmamba
@@ -12,7 +13,6 @@ License:       MIT
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: libpython311-devel
 BuildRequires: python3.11dist(packaging)
-BuildRequires: python3.11dist(setuptools)
 ## AUTOBUILDREQ-END
 BuildRequires: python3-devel >= 3.11.5-3mamba
 
@@ -34,33 +34,32 @@ Obsoletes: gunicorn <= 20.1.0-1mamba
 %setup -q -n gunicorn-%{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=%{_includedir}/python \
-   --install-lib=%{python_sitearch} \
-   --record=%{name}.filelist
+%{__python} -m installer --destdir=%{buildroot} dist/*.whl
 
-sed -i "s,.*/man/.*,&.gz," %{name}.filelist
-sed -i "/_gaiohttp.pyc/d;/_gaiohttp.pyo/d" %{name}.filelist
-sed -i "/_gaiohttp.pyc/d;/_gaiohttp.pyo/d" %{name}.filelist
+#%if "%{?with_pyver}" != "3"
+## Rename any conflicting file outside of python site packages tree
+#for f in %{_bindir}/pdm; do
+#   mv %{buildroot}${f}{,-%{?pyappend}}
+#done
+#%endif
 
-ln -s gunicorn %{buildroot}%{_bindir}/run_gunicorn
-
-sed -i "\,\.egg-info/,d;s,.*/man/.*,&.gz," %{name}.filelist
-
-%files %{?pyappend} -f %{name}.filelist
+%files %{?pyappend}
 %defattr(-,root,root)
-%{_bindir}/run_gunicorn
-%dir %{python_sitearch}/gunicorn-%{version}-py*.egg-info
-%{python_sitearch}/gunicorn-%{version}-py*.egg-info/*
+%{_bindir}/gunicorn
+%dir %{python_sitelib}/%{pkgname}-%{version}.dist-info
+%{python_sitelib}/%{pkgname}-%{version}.dist-info/*
+%dir %{python_sitelib}/%{pkgname}
+%{python_sitelib}/%{pkgname}/*
 %doc LICENSE THANKS
 
 %changelog
+* Sun Jul 21 2024 Automatic Build System <autodist@openmamba.org> 22.0.0-1mamba
+- automatic version update by autodist
+
 * Tue Sep 26 2023 Automatic Build System <autodist@mambasoft.it> 21.2.0-2mamba
 - rebuilt by autoport with build requirements: python3-devel>=3.11.5-3mamba