diff --git a/ksystemlog.spec b/ksystemlog.spec
index fe016ad..5b7ca3e 100644
--- a/ksystemlog.spec
+++ b/ksystemlog.spec
@@ -1,5 +1,5 @@
 Name:          ksystemlog
-Version:       20.12.2
+Version:       20.12.3
 Release:       1mamba
 Summary:       System log viewer tool
 Group:         Graphical Desktop/Applications/Administration
@@ -36,7 +36,6 @@ BuildRequires: libsystemd-devel
 ## AUTOBUILDREQ-END
 BuildRequires: automoc4
 BuildRequires: cmake
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
 This program is developed for being used by beginner users, which don't know how to find information about their Linux system, and how the log files are in their computer.
@@ -82,6 +81,9 @@ exit 0
 %doc COPYING
 
 %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