diff --git a/libksane.spec b/libksane.spec
index 14c088e..5832fbb 100644
--- a/libksane.spec
+++ b/libksane.spec
@@ -1,5 +1,5 @@
 Name:          libksane
-Version:       20.12.3
+Version:       21.04.0
 Release:       1mamba
 Summary:       SANE Library interface for KDE
 Group:         Graphical Desktop/Libraries/KDE
@@ -24,7 +24,7 @@ BuildRequires: libstdc++6-devel
 ## AUTOBUILDREQ-END
 BuildRequires: cmake
 Provides:      libksane5
-Obsoletes:     libksane5
+Obsoletes:     libksane5 < 21.04.0
 
 %description
 Libksane is a KDE interface for SANE library to control flat scanners.
@@ -36,7 +36,7 @@ Group:         Development/Libraries
 Summary:       Development files for %{name}
 Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
 Provides:      libksane5-devel
-Obsoletes:     libksane5-devel
+Obsoletes:     libksane5-devel < 21.04.0
 
 %description devel
 Libksane is a KDE interface for SANE library to control flat scanners.
@@ -84,7 +84,7 @@ exit 0
 %defattr(-,root,root)
 %{_kde5_libdir}/libKF5Sane.so.*
 %{_datadir}/icons/hicolor/16x16/actions/*.png
-%doc AUTHORS COPYING COPYING.LIB
+%doc AUTHORS LICENSES
 
 %files devel
 %defattr(-,root,root)
@@ -94,9 +94,12 @@ exit 0
 %dir %{_kde5_libdir}/cmake/KF5Sane
 %{_kde5_libdir}/cmake/KF5Sane/*.cmake
 %{_kde5_libdir}/libKF5Sane.so
-%doc ChangeLog NEWS TODO
+%doc TODO
 
 %changelog
+* Sun Apr 25 2021 Automatic Build System <autodist@mambasoft.it> 21.04.0-1mamba
+- automatic version update by autodist
+
 * Fri Mar 05 2021 Automatic Build System <autodist@mambasoft.it> 20.12.3-1mamba
 - automatic version update by autodist