diff --git a/ktuberling.spec b/ktuberling.spec
index 3128abf..9b140f0 100644
--- a/ktuberling.spec
+++ b/ktuberling.spec
@@ -1,5 +1,5 @@
 Name:          ktuberling
-Version:       20.12.2
+Version:       20.12.3
 Release:       1mamba
 Summary:       Picture Game for Children
 Group:         Graphical Desktop/Applications/Games
@@ -17,7 +17,6 @@ BuildRequires: libstdc++6-devel
 ## AUTOBUILDREQ-END
 BuildRequires: automoc4
 BuildRequires: cmake
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
 Picture Game for Children.
@@ -74,6 +73,9 @@ 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