diff --git a/umbrello.spec b/umbrello.spec
index 47bd5b7..359d20a 100644
--- a/umbrello.spec
+++ b/umbrello.spec
@@ -1,5 +1,5 @@
 Name:          umbrello
-Version:       20.08.3
+Version:       20.12.0
 Release:       1mamba
 Summary:       UML modelling tool and code generator
 Group:         Graphical Desktop/Applications/Development
@@ -112,6 +112,9 @@ exit 0
 %doc AUTHORS COPYING COPYING.DOC THANKS
 
 %changelog
+* Fri Dec 11 2020 Automatic Build System <autodist@mambasoft.it> 20.12.0-1mamba
+- automatic version update by autodist
+
 * Sun Nov 08 2020 Automatic Build System <autodist@mambasoft.it> 20.08.3-1mamba
 - automatic version update by autodist