diff --git a/python-acme.spec b/python-acme.spec
index a81e0bd..5b9327a 100644
--- a/python-acme.spec
+++ b/python-acme.spec
@@ -1,5 +1,5 @@
 Name:          python-acme
-Version:       1.19.0
+Version:       1.21.0
 Release:       1mamba
 Summary:       ACME protocol implementation for Python
 Group:         System/Libraries
@@ -54,6 +54,9 @@ sed -i "\,\.egg-info/,d;s,.*/man/.*,&.gz," %{name}.filelist
 %{python_sitearch}/acme-%{version}-py*.egg-info/*
 
 %changelog
+* Tue Dec 07 2021 Automatic Build System <autodist@mambasoft.it> 1.21.0-1mamba
+- automatic version update by autodist
+
 * Fri Sep 17 2021 Automatic Build System <autodist@mambasoft.it> 1.19.0-1mamba
 - automatic version update by autodist