diff --git a/kmbox.spec b/kmbox.spec
index aa459c6..224c2c4 100644
--- a/kmbox.spec
+++ b/kmbox.spec
@@ -1,7 +1,7 @@
 %define majver %(echo %version | cut -d. -f1-2)
 
 Name:          kmbox
-Version:       17.08.3
+Version:       17.12.0
 Release:       1mamba
 Summary:       KDE Frameworks 5 mailbox library
 Group:         System/Libraries
@@ -86,6 +86,9 @@ exit 0
 %{_libdir}/qt5/mkspecs/modules/qt_Mbox.pri
 
 %changelog
+* Tue Jan 02 2018 Automatic Build System <autodist@mambasoft.it> 17.12.0-1mamba
+- automatic version update by autodist
+
 * Sat Nov 11 2017 Automatic Build System <autodist@mambasoft.it> 17.08.3-1mamba
 - automatic version update by autodist