diff --git a/python-pyrfc3339.spec b/python-pyrfc3339.spec
index e28081d..c89e7ab 100644
--- a/python-pyrfc3339.spec
+++ b/python-pyrfc3339.spec
@@ -1,6 +1,6 @@
 Name:          python-pyrfc3339
 Version:       1.1
-Release:       3mamba
+Release:       4mamba
 Summary:       Generate and parse RFC 3339 timestamps
 Group:         System/Libraries
 Vendor:        openmamba
@@ -44,6 +44,9 @@ sed -i "\,\.egg-info/,d;s,.*/man/.*,&.gz," %{name}.filelist
 %{python_sitearch}/pyRFC3339-%{version}-py*.egg-info/*
 
 %changelog
+* Tue Jul 18 2023 Silvan Calarco <silvan.calarco@mambasoft.it> 1.1-4mamba
+- rebuilt with python 3.10
+
 * Fri Apr 09 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 1.1-3mamba
 - rebuilt with distdeps