diff --git a/cantor.spec b/cantor.spec
index cb13d65..5c6bc0d 100644
--- a/cantor.spec
+++ b/cantor.spec
@@ -1,5 +1,5 @@
 Name:          cantor
-Version:       16.12.1
+Version:       16.12.3
 Release:       1mamba
 Summary:       KDE Frontend to Mathematical Software
 Group:         Graphical Desktop/Applications/Educational
@@ -110,6 +110,12 @@ exit 0
 %{_kde5_libdir}/libcantorlibs.so
 
 %changelog
+* Thu Mar 09 2017 Automatic Build System <autodist@mambasoft.it> 16.12.3-1mamba
+- automatic version update by autodist
+
+* Thu Feb 09 2017 Automatic Build System <autodist@mambasoft.it> 16.12.2-1mamba
+- automatic version update by autodist
+
 * Fri Jan 13 2017 Automatic Build System <autodist@mambasoft.it> 16.12.1-1mamba
 - automatic version update by autodist