diff --git a/python-sip.spec b/python-sip.spec
index 6ec545e..a7b1593 100644
--- a/python-sip.spec
+++ b/python-sip.spec
@@ -1,5 +1,5 @@
 Name:          python-sip
-Version:       6.3.1
+Version:       6.4.0
 Release:       1mamba
 Summary:       Python extension module generator for C and C++ libraries
 Group:         System/Libraries/Python
@@ -91,6 +91,9 @@ find %{python_sitearch}/*.egg-info -type d -empty -delete > /dev/null || true
 #%doc doc/*
 
 %changelog
+* Thu Oct 28 2021 Automatic Build System <autodist@mambasoft.it> 6.4.0-1mamba
+- automatic version update by autodist
+
 * Thu Oct 14 2021 Automatic Build System <autodist@mambasoft.it> 6.3.1-1mamba
 - automatic version update by autodist