diff --git a/kalgebra.spec b/kalgebra.spec
index 7e4d49e..c3a119f 100644
--- a/kalgebra.spec
+++ b/kalgebra.spec
@@ -1,6 +1,6 @@
 ### AUTOUPDATE-OFF: 1
 Name:          kalgebra
-Version:       17.12.1
+Version:       17.12.3
 Release:       1mamba
 Summary:       A mathematical calculator based content markup MathML language
 Group:         Graphical Desktop/Applications/Scientific
@@ -112,6 +112,12 @@ exit 0
 %doc COPYING COPYING.DOC COPYING.LIB
 
 %changelog
+* Thu Mar 08 2018 Automatic Build System <autodist@mambasoft.it> 17.12.3-1mamba
+- automatic version update by autodist
+
+* Fri Feb 09 2018 Automatic Build System <autodist@mambasoft.it> 17.12.2-1mamba
+- automatic version update by autodist
+
 * Thu Jan 11 2018 Automatic Build System <autodist@mambasoft.it> 17.12.1-1mamba
 - automatic version update by autodist