diff --git a/akonadi-calendar.spec b/akonadi-calendar.spec
index 01078cc..c093314 100644
--- a/akonadi-calendar.spec
+++ b/akonadi-calendar.spec
@@ -1,7 +1,7 @@
 %define majver %(echo %version | cut -d. -f1-2)
 
 Name:          akonadi-calendar
-Version:       17.08.3
+Version:       17.12.0
 Release:       1mamba
 Summary:       KDE Frameworks 5 Akonadi calendar library
 Group:         System/Libraries
@@ -125,6 +125,9 @@ exit 0
 %{_libdir}/qt5/mkspecs/modules/qt_AkonadiCalendar.pri
 
 %changelog
+* Sat Jan 06 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