diff --git a/python-rdflib.spec b/python-rdflib.spec
index 2436cb2..eb2c8f7 100644
--- a/python-rdflib.spec
+++ b/python-rdflib.spec
@@ -1,6 +1,6 @@
 Name:          python-rdflib
 Version:       5.0.0
-Release:       1mamba
+Release:       2mamba
 Summary:       A Python library for working with RDF, a simple yet powerful language for representing information.
 Group:         System/Libraries/Python
 Vendor:        openmamba
@@ -10,10 +10,10 @@ URL:           https://pypi.python.org/pypi/rdflib/
 Source:        https://pypi.debian.net/rdflib/rdflib-%{version}.tar.gz
 License:       BSD
 ## AUTOBUILDREQ-BEGIN
-BuildRequires: libpython-devel
+BuildRequires: libpython3-devel
 BuildRequires: python
 ## AUTOBUILDREQ-END
-BuildRequires: libpython-devel
+BuildRequires: libpython3-devel
 Requires:      python-isodate
 Requires:      python >= %python_version
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
@@ -21,6 +21,13 @@ BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 %description
 %{summary}.
 
+%if 0%{?with_pyver}
+%define py_requires_append \
+Requires:     python-isodate%{?pyappend:-%pyappend}
+Obsoletes:    python-rdflib <= 5.0.0-1mamba
+%pyver_package
+%endif
+
 %prep
 %setup -q -n rdflib-%{version}
 
@@ -39,16 +46,13 @@ CFLAGS="%{optflags}" %{__python} setup.py build
 
 #sed -i "\,\.egg-info/,d;s,.*/man/.*,&.gz," %{name}.filelist
 
-%files -f %{name}.filelist
+%files %{?pyappend} -f %{name}.filelist
 %defattr(-,root,root)
-## note: this list is just an example; modify as required
-# %{python_sitearch}/%{name}.py*
-# %{python_sitearch}/%{name}.so
-
-## note: eventually add the remaining documents (if any)
-# 
 
 %changelog
+* Tue Jan 19 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 5.0.0-2mamba
+- rebuilt with python3
+
 * Wed May 20 2020 Automatic Build System <autodist@mambasoft.it> 5.0.0-1mamba
 - automatic version update by autodist