diff --git a/libqwt.spec b/libqwt.spec
index 00c9303..85756a2 100644
--- a/libqwt.spec
+++ b/libqwt.spec
@@ -1,12 +1,12 @@
 Name:          libqwt
-Version:       6.1.6
+Version:       6.2.0
 Release:       1mamba
 Summary:       Qt Widgets for Technical Applications
 Group:         System/Libraries
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           http://qwt.sourceforge.net
+URL:           https://qwt.sourceforge.io/
 Source:        http://downloads.sourceforge.net/project/qwt/qwt/%{version}/qwt-%{version}.tar.bz2
 Source1:       qwtconfig-openmamba.pri
 Patch1:        libqwt-6.0.2-install_qt.patch
@@ -15,10 +15,10 @@ License:       LGPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
 BuildRequires: libgcc
-BuildRequires: libqt4-devel
+BuildRequires: libglvnd-devel
+BuildRequires: libqt5-devel
 BuildRequires: libstdc++6-devel
 ## AUTOBUILDREQ-END
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
 The Qwt library contains GUI Components and utility classes which are primarily useful for programs with a technical background.
@@ -41,13 +41,15 @@ Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
 %description apidocs
 API documentation for %{name}.
 
+#% debug_package
+
 %prep
 %setup -q -n qwt-%{version}
 cp %{SOURCE1} qwtconfig.pri
 sed -i "s|%LIB%|%{_lib}|" qwtconfig.pri
 
 %build
-%_qt4_qmake \
+%_qt5_qmake \
   CONFIG+=install-qt
 
 %make
@@ -71,7 +73,7 @@ sed -i "s|%LIB%|%{_lib}|" qwtconfig.pri
 %files devel
 %defattr(-,root,root)
 %dir %{_includedir}/qwt
-%{_includedir}/qwt/*.h
+%{_includedir}/qwt/*
 %{_libdir}/libqwt.so
 #%{_mandir}/man3/*
 %doc README
@@ -82,6 +84,9 @@ sed -i "s|%LIB%|%{_lib}|" qwtconfig.pri
 %{_docdir}/qwt/*
 
 %changelog
+* Thu Jul 29 2021 Automatic Build System <autodist@mambasoft.it> 6.2.0-1mamba
+- automatic version update by autodist
+
 * Wed Jan 06 2021 Automatic Build System <autodist@mambasoft.it> 6.1.6-1mamba
 - automatic version update by autodist