diff --git a/katomic.spec b/katomic.spec
index c6a4e9f..7310f0a 100644
--- a/katomic.spec
+++ b/katomic.spec
@@ -1,5 +1,5 @@
 Name:          katomic
-Version:       17.08.3
+Version:       17.12.0
 Release:       1mamba
 Summary:       Sokoban-like Logic Game
 Group:         Graphical Desktop/Applications/Games
@@ -69,6 +69,9 @@ Sokoban-like Logic Game.
 %doc COPYING COPYING.DOC
 
 %changelog
+* Wed Dec 20 2017 Automatic Build System <autodist@mambasoft.it> 17.12.0-1mamba
+- automatic version update by autodist
+
 * Fri Nov 10 2017 Automatic Build System <autodist@mambasoft.it> 17.08.3-1mamba
 - automatic version update by autodist