diff --git a/python-pycparser.spec b/python-pycparser.spec
index 767f369..1b8d7b7 100644
--- a/python-pycparser.spec
+++ b/python-pycparser.spec
@@ -1,16 +1,16 @@
 Name:          python-pycparser
-Version:       2.20
-Release:       2mamba
+Version:       2.21
+Release:       1mamba
 Summary:       A parser for the C language, written in pure Python
 Group:         System/Libraries
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           https://pypi.python.org/pypi/pycparser
+URL:           https://pypi.org/project/pycparser/
 Source:        https://pypi.debian.net/pycparser/pycparser-%{version}.tar.gz
 License:       BSD
 ## AUTOBUILDREQ-BEGIN
-BuildRequires: libpython36-devel
+BuildRequires: libpython3-devel
 ## AUTOBUILDREQ-END
 BuildRequires: libpython3-devel >= 3.7.4
 Requires:      python >= %python_version
@@ -49,6 +49,9 @@ chmod +r %{buildroot}%{python_sitearch}/pycparser-%{version}-*/*
 %doc LICENSE
 
 %changelog
+* Sat Nov 06 2021 Automatic Build System <autodist@mambasoft.it> 2.21-1mamba
+- automatic version update by autodist
+
 * Mon Mar 15 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 2.20-2mamba
 - rebuilt with new python requirements