diff --git a/klettres.spec b/klettres.spec
index b13e6f8..66db1c8 100644
--- a/klettres.spec
+++ b/klettres.spec
@@ -1,16 +1,17 @@
 Name:          klettres
-Version:       21.08.3
+Version:       21.12.0
 Release:       1mamba
 Summary:       Learn The Alphabet
 Group:         Graphical Desktop/Applications/Educational
 Vendor:        openmamba
 Distribution:  openmamba
-Packager:      Davide Madrisan <davide.madrisan@gmail.com>
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
 URL:           https://apps.kde.org/education/klettres/
 Source:        http://download.kde.org/stable/release-service/%{version}/src/klettres-%{version}.tar.xz
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
+BuildRequires: libQt5Svg-devel
 BuildRequires: libattica5-devel
 BuildRequires: libgcc
 BuildRequires: libkauth-devel
@@ -25,13 +26,12 @@ BuildRequires: libkservice-devel
 BuildRequires: libkwidgetsaddons-devel
 BuildRequires: libkxmlgui-devel
 BuildRequires: libphonon-devel
-BuildRequires: libqt5-devel
 BuildRequires: libstdc++6-devel
+BuildRequires: qt5-qtbase-devel
 ## AUTOBUILDREQ-END
 BuildRequires: cmake
-#Requires:      kde-workspace
 Provides:      klettres4 = %{?epoch:%epoch:}%{version}-%{release}
-Obsoletes:     klettres4
+Obsoletes:     klettres4 < 21.12.0
 
 %description
 KLettres is an application specially designed to help the user to learn alphabet in a new language and then to learn to read simple syllables.
@@ -81,7 +81,6 @@ exit 0
 
 %files -f %{name}5_qt.lang
 %defattr(-,root,root)
-#%{_sysconfdir}/xdg/klettres.knsrc
 %{_kde5_bindir}/%{name}
 %{_kde5_datadir}/%{name}
 %{_kde5_icondir}/hicolor/*/apps/%{name}.png
@@ -91,10 +90,12 @@ exit 0
 %{_datadir}/kxmlgui5/klettres/klettresui.rc
 %{_datadir}/qlogging-categories5/klettres.categories
 %{_datadir}/knsrcfiles/klettres.knsrc
-%doc AUTHORS COPYING COPYING.DOC COPYING.LIB
-#ChangeLog README_packagers TODO
+%doc LICENSES
 
 %changelog
+* Sat Dec 11 2021 Automatic Build System <autodist@mambasoft.it> 21.12.0-1mamba
+- automatic version update by autodist
+
 * Thu Nov 04 2021 Automatic Build System <autodist@mambasoft.it> 21.08.3-1mamba
 - automatic version update by autodist