diff --git a/python-rdflib.spec b/python-rdflib.spec
index eb2c8f7..9c12fd5 100644
--- a/python-rdflib.spec
+++ b/python-rdflib.spec
@@ -1,6 +1,6 @@
 Name:          python-rdflib
 Version:       5.0.0
-Release:       2mamba
+Release:       3mamba
 Summary:       A Python library for working with RDF, a simple yet powerful language for representing information.
 Group:         System/Libraries/Python
 Vendor:        openmamba
@@ -23,7 +23,7 @@ BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %if 0%{?with_pyver}
 %define py_requires_append \
-Requires:     python-isodate%{?pyappend:-%pyappend}
+Requires:     python-isodate%{?pyappend:-%pyappend} \
 Obsoletes:    python-rdflib <= 5.0.0-1mamba
 %pyver_package
 %endif
@@ -50,6 +50,9 @@ CFLAGS="%{optflags}" %{__python} setup.py build
 %defattr(-,root,root)
 
 %changelog
+* Fri Jan 22 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 5.0.0-3mamba
+- fix obsolete for python-rdflib
+
 * Tue Jan 19 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 5.0.0-2mamba
 - rebuilt with python3