diff --git a/cantor.spec b/cantor.spec
index 6b825b8..3a4cd66 100644
--- a/cantor.spec
+++ b/cantor.spec
@@ -1,5 +1,5 @@
 Name:          cantor
-Version:       21.08.2
+Version:       21.08.3
 Release:       1mamba
 Summary:       KDE Frontend to Mathematical Software
 Group:         Graphical Desktop/Applications/Educational
@@ -152,6 +152,9 @@ exit 0
 %{_libdir}/cmake/Cantor/Cantor*.cmake
 
 %changelog
+* Thu Nov 04 2021 Automatic Build System <autodist@mambasoft.it> 21.08.3-1mamba
+- automatic version update by autodist
+
 * Fri Oct 08 2021 Automatic Build System <autodist@mambasoft.it> 21.08.2-1mamba
 - automatic version update by autodist