diff --git a/kholidays.spec b/kholidays.spec
index 3751219..82d2733 100644
--- a/kholidays.spec
+++ b/kholidays.spec
@@ -1,7 +1,7 @@
 %define majver %(echo %version | cut -d. -f1-2)
 
 Name:          kholidays
-Version:       17.08.3
+Version:       17.12.0
 Release:       1mamba
 Summary:       KDE Frameworks 5 holidays library
 Group:         System/Libraries
@@ -92,6 +92,9 @@ exit 0
 %{_kde5_mkspecsdir}/qt_KHolidays.pri
 
 %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