diff --git a/python-yaml.spec b/python-yaml.spec
index 81dbf9c..500e8ee 100644
--- a/python-yaml.spec
+++ b/python-yaml.spec
@@ -1,7 +1,7 @@
 %define pkgname %(echo %name | cut -d- -f2- | tr - _)
 Name:          python-yaml
 Version:       6.0.1
-Release:       2mamba
+Release:       3mamba
 Summary:       YAML parser and emitter for Python
 Group:         System/Libraries/Python
 Vendor:        openmamba
@@ -31,8 +31,8 @@ YAML parser and emitter for python:
 
 %if 0%{?with_pyver}
 %define py_requires_append \
-Provides:      PyYAML-%{?with_pyver} \
-Obsoletes:     PyYAML-%{?with_pyver} < 6.0.1-2mamba
+Provides:      PyYAML-py%{?with_pyver} \
+Obsoletes:     PyYAML-py%{?with_pyver} < 6.0.1-2mamba
 %pyver_package
 %endif
 
@@ -66,6 +66,9 @@ CFLAGS="%{optflags}" %{__python} -m build --no-isolation --wheel --config-settin
 %{python_sitearch}/_%{pkgname}/*
 
 %changelog
+* Mon Oct 16 2023 Silvan Calarco <silvan.calarco@mambasoft.it> 6.0.1-3mamba
+- fix obsoletes for PyYAML-py3*
+
 * Fri Sep 29 2023 Automatic Build System <autodist@mambasoft.it> 6.0.1-2mamba
 - rebuilt by autoport with build requirements: python3-devel>=3.11.5-3mamba