diff --git a/python-chardet.spec b/python-chardet.spec
index 504a09f..83e6520 100644
--- a/python-chardet.spec
+++ b/python-chardet.spec
@@ -1,6 +1,7 @@
+%define pkgname %(echo %name | cut -d- -f2- | tr - _)
 Name:          python-chardet
-Version:       5.0.0
-Release:       1mamba
+Version:       5.1.0
+Release:       2mamba
 Summary:       Universal Encoding Detector
 Group:         System/Libraries
 Vendor:        openmamba
@@ -11,7 +12,6 @@ Source:        https://pypi.debian.net/chardet/chardet-%{version}.tar.gz
 License:       LGPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: libpython3-devel
-BuildRequires: python3.7dist(setuptools)
 ## AUTOBUILDREQ-END
 BuildArch:     noarch
 
@@ -34,6 +34,10 @@ Detects:
  - TIS-620 (Thai)
 
 %if 0%{?with_pyver}
+%if "0%{?with_pyver}" == "03"
+%define py_requires_append \
+Obsoletes:     python-chardet < 5.1.0-2mamba
+%endif
 %pyver_package
 %endif
 
@@ -41,31 +45,35 @@ Detects:
 %setup -q -n chardet-%{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 "\,\.egg-info/,d;s,.*/man/.*,&.gz," %{name}.filelist
-
-%if 0%{?with_pyver}
-mv %{buildroot}%{_bindir}/chardetect %{buildroot}%{_bindir}/chardetect-%{?pyappend}
-sed -i "s|%{_bindir}/chardetect|%{_bindir}/chardetect-%{?pyappend}|" %{name}.filelist
+%if "%{?with_pyver}" != "3"
+# Rename any conflicting file outside of python site packages tree
+for f in %{_bindir}/chardetect; do
+   mv %{buildroot}${f}{,-%{?pyappend}}
+done
 %endif
 
-%files %{?pyappend} -f %{name}.filelist
+%files %{?pyappend}
 %defattr(-,root,root)
-%dir %{python_sitearch}/chardet-%{version}-py*.egg-info
-%{python_sitearch}/chardet-%{version}-py*.egg-info/*
+%{_bindir}/chardetect*
+%dir %{python_sitelib}/%{pkgname}-%{version}.dist-info
+%{python_sitelib}/%{pkgname}-%{version}.dist-info/*
+%dir %{python_sitelib}/%{pkgname}
+%{python_sitelib}/%{pkgname}/*
 #%doc COPYING
 
 %changelog
+* Tue Mar 07 2023 Silvan Calarco <silvan.calarco@mambasoft.it> 5.1.0-2mamba
+- python-chardet-py3: obsolete python-chardet
+
+* Mon Mar 06 2023 Automatic Build System <autodist@mambasoft.it> 5.1.0-1mamba
+- automatic version update by autodist
+
 * Tue Jul 05 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 5.0.0-1mamba
 - update to 5.0.0