diff --git a/kdegraphics-thumbnailers.spec b/kdegraphics-thumbnailers.spec
index f6e7850..efb56b3 100644
--- a/kdegraphics-thumbnailers.spec
+++ b/kdegraphics-thumbnailers.spec
@@ -1,5 +1,5 @@
 Name:          kdegraphics-thumbnailers
-Version:       17.08.3
+Version:       17.12.0
 Release:       1mamba
 Summary:       Thumbnailers for various graphic types
 Group:         Graphical Desktop/Applications/Graphics
@@ -57,6 +57,9 @@ exit 0
 %doc COPYING COPYING.LIB
 
 %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