diff --git a/kbounce.spec b/kbounce.spec
index d20abb9..c9d0cf4 100644
--- a/kbounce.spec
+++ b/kbounce.spec
@@ -1,5 +1,5 @@
 Name:          kbounce
-Version:       20.12.2
+Version:       20.12.3
 Release:       1mamba
 Summary:       Ball Bouncing Game
 Group:         Graphical Desktop/Applications/Games
@@ -34,7 +34,6 @@ BuildRequires: libstdc++6-devel
 BuildRequires: libknotifyconfig-devel
 BuildRequires: automoc4
 BuildRequires: cmake
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
 Ball Bouncing Game.
@@ -88,6 +87,9 @@ exit 0
 %doc COPYING COPYING.DOC COPYING.LIB
 
 %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