diff --git a/README.md b/README.md
index bd562cd..2e42820 100644
--- a/README.md
+++ b/README.md
@@ -1,20 +1,4 @@
 # djview
 
-DjView4 is a new portable DjVu viewer and browser plugin.
-
-Highlights:
-
-Entirely based on the public djvulibre api.
-Entirely written in portable Qt4.
-Works with Qt/X11, Qt/Mac, and Qt/Windows.
-Continuous scrolling of pages
-Side-by-side display of pages
-Ability to specify a url to the djview command
-All plugin and cgi options available from the command line
-All silly annotations implemented
-Display thumbnails as a grid
-Display outlines
-Page names supported (see djvused command set-page-title)
-Metadata dialog (see djvused command set-meta)
-Implemented as reusable Qt widgets
+DjView is a portable DjVu viewer and browser plugin.
 
diff --git a/djview.spec b/djview.spec
index 4b5c44c..65c5bf2 100644
--- a/djview.spec
+++ b/djview.spec
@@ -1,44 +1,28 @@
 Name:          djview
-Version:       4.10.6
-Release:       1mamba
+Version:       4.12
+Release:       2mamba
 Summary:       A portable DjVu viewer
 Group:         Graphical Desktop/Applications/Publishing
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           http://djvu.sourceforge.net/djview4.html
+URL:           https://djvu.sourceforge.net/djview4.html
 Source:        http://downloads.sourceforge.net/djvu/djview-%{version}.tar.gz
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
+BuildRequires: ldconfig
+BuildRequires: libGL-devel
 BuildRequires: libdjvulibre-devel
 BuildRequires: libgcc
-BuildRequires: libqt4-devel
+BuildRequires: libqt5-devel
 BuildRequires: libstdc++6-devel
 BuildRequires: libtiff-devel
-BuildRequires: libX11-devel
-BuildRequires: libXext-devel
 ## AUTOBUILDREQ-END
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
-DjView4 is a new portable DjVu viewer and browser plugin.
-
-Highlights:
-
-Entirely based on the public djvulibre api.
-Entirely written in portable Qt4.
-Works with Qt/X11, Qt/Mac, and Qt/Windows.
-Continuous scrolling of pages
-Side-by-side display of pages
-Ability to specify a url to the djview command
-All plugin and cgi options available from the command line
-All silly annotations implemented
-Display thumbnails as a grid
-Display outlines
-Page names supported (see djvused command set-page-title)
-Metadata dialog (see djvused command set-meta)
-Implemented as reusable Qt widgets
+DjView is a portable DjVu viewer and browser plugin.
 
 %package mozilla-plugin
 Summary:       DjVuLibre plugin for web browsers
@@ -49,32 +33,19 @@ Provides:      djvulibre-plugins
 Obsoletes:     djvulibre-plugins
 
 %description mozilla-plugin
-DjView4 is a new portable DjVu viewer and browser plugin.
+DjView is a new portable DjVu viewer and browser plugin.
+This package provides the web browser plugin.
 
-Highlights:
-
-Entirely based on the public djvulibre api.
-Entirely written in portable Qt4.
-Works with Qt/X11, Qt/Mac, and Qt/Windows.
-Continuous scrolling of pages
-Side-by-side display of pages
-Ability to specify a url to the djview command
-All plugin and cgi options available from the command line
-All silly annotations implemented
-Display thumbnails as a grid
-Display outlines
-Page names supported (see djvused command set-page-title)
-Metadata dialog (see djvused command set-meta)
-Implemented as reusable Qt widgets
-
-This package contains the mozilla-based plugin for browsers.
+%debug_package
 
 %prep
-%setup -q
+%setup -q -n djview4-%{version}
+NOCONFIGURE=1 ./autogen.sh
 
 %build
-export QTDIR=/usr/lib/qt4
-%configure
+%configure \
+   QTDIR=%{_libdir}/qt5
+
 %make
 
 %install
@@ -102,6 +73,12 @@ export QTDIR=/usr/lib/qt4
 %{_mandir}/man1/nsdejavu.1*
 
 %changelog
+* Mon Feb 08 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 4.12-2mamba
+- rebuilt with qt5
+
+* Fri Feb 05 2021 Automatic Build System <autodist@mambasoft.it> 4.12-1mamba
+- automatic version update by autodist
+
 * Thu May 05 2016 Automatic Build System <autodist@mambasoft.it> 4.10.6-1mamba
 - automatic version update by autodist