diff --git a/ark.spec b/ark.spec
index acbd16c..7bb85dc 100644
--- a/ark.spec
+++ b/ark.spec
@@ -1,5 +1,5 @@
 Name:          ark
-Version:       17.08.3
+Version:       17.12.0
 Release:       1mamba
 Summary:       Manager for compressed files and archives
 Group:         Graphical Desktop/Applications/Archiving
@@ -122,6 +122,9 @@ exit 0
 %doc COPYING
 
 %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