diff --git a/kalgebra.spec b/kalgebra.spec
index 5fbe255..da568d2 100644
--- a/kalgebra.spec
+++ b/kalgebra.spec
@@ -1,6 +1,6 @@
 ### AUTOUPDATE-OFF: 1
 Name:          kalgebra
-Version:       21.12.0
+Version:       21.12.1
 Release:       1mamba
 Summary:       A mathematical calculator based content markup MathML language
 Group:         Graphical Desktop/Applications/Scientific
@@ -105,6 +105,9 @@ exit 0
 %doc COPYING COPYING.DOC COPYING.LIB
 
 %changelog
+* Thu Jan 06 2022 Automatic Build System <autodist@mambasoft.it> 21.12.1-1mamba
+- automatic version update by autodist
+
 * Thu Dec 09 2021 Automatic Build System <autodist@mambasoft.it> 21.12.0-1mamba
 - automatic version update by autodist