diff --git a/ksudoku.spec b/ksudoku.spec
index 7f26e4f..457678c 100644
--- a/ksudoku.spec
+++ b/ksudoku.spec
@@ -1,5 +1,5 @@
 Name:          ksudoku
-Version:       20.12.2
+Version:       20.12.3
 Release:       1mamba
 Summary:       A program that can generate and solve sudoku
 Group:         Graphical Desktop/Applications/Games
@@ -29,7 +29,6 @@ BuildRequires: automoc4
 BuildRequires: cmake
 Provides:      ksudoku4
 Obsoletes:     ksudoku4
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
 A program that can generate and solve sudoku.
@@ -84,6 +83,9 @@ exit 0
 %doc COPYING COPYING.DOC
 
 %changelog
+* Fri Mar 05 2021 Automatic Build System <autodist@mambasoft.it> 20.12.3-1mamba
+- automatic version update by autodist
+
 * Fri Feb 05 2021 Automatic Build System <autodist@mambasoft.it> 20.12.2-1mamba
 - automatic version update by autodist