diff --git a/README.md b/README.md
index 9defd7b..1f22739 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,7 @@
 # libart_lgpl
 
 Libart is a library for high-performance 2D graphics.
-It is currently being used as the antialiased rendering engine for the Gnome
-Canvas.
+It is currently being used as the antialiased rendering engine for the Gnome Canvas.
 It is also the rendering engine for Gill, the Gnome Illustration app.
 Libart is also used by KDE libraries.
 
diff --git a/libart_lgpl.spec b/libart_lgpl.spec
index 235ae29..9b155d8 100644
--- a/libart_lgpl.spec
+++ b/libart_lgpl.spec
@@ -1,31 +1,24 @@
-%define gnomever    2.30.1
-
-%define gnomemajver %(echo %gnomever | cut -d. -f 1-2)
-%define gnomegroup  platform
-%define pkgname     libart_lgpl
+%define majver %(echo %version | cut -d. -f1-2)
 
 Name:          libart_lgpl
 Version:       2.3.21
-Release:       2mamba
+Release:       3mamba
 Summary:       A library for high-performance 2D graphics
 Group:         System/Libraries
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
 URL:           http://www.levien.com/libart/
-# bugfixes: http://ftp.acc.umu.se/pub/GNOME/sources/%{pkgname}
-Source:        http://ftp.gnome.org/pub/GNOME/%{gnomegroup}/%{gnomemajver}/%{gnomever}/sources/%{pkgname}-%{version}.tar.bz2
+Source:        https://download.gnome.org/sources/libart_lgpl/%{majver}/libart_lgpl-%{version}.tar.bz2
 License:       LGPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
 ## AUTOBUILDREQ-END
-
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
 Libart is a library for high-performance 2D graphics.
-It is currently being used as the antialiased rendering engine for the Gnome 
-Canvas.
+It is currently being used as the antialiased rendering engine for the Gnome Canvas.
 It is also the rendering engine for Gill, the Gnome Illustration app.
 Libart is also used by KDE libraries.
 
@@ -36,15 +29,16 @@ Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
 
 %description devel
 Libart is a library for high-performance 2D graphics.
-It is currently being used as the antialiased rendering engine for the Gnome 
-Canvas.
+It is currently being used as the antialiased rendering engine for the Gnome Canvas.
 It is also the rendering engine for Gill, the Gnome Illustration app.
 Libart is also used by KDE libraries.
+This package contains static libraries and header files needed for development.
 
-This package contains static libraries and header files need for development.
+%debug_package
 
 %prep
-%setup -q -n %{pkgname}-%{version}
+%setup -q
+sed -i "s,| arm-\*  |,| aarch64-\* | arm-\*  |," config.sub
 
 %build
 %configure
@@ -63,19 +57,24 @@ This package contains static libraries and header files need for development.
 %files
 %defattr(-,root,root)
 %{_libdir}/libart_lgpl_2.so.*
-%doc AUTHORS ChangeLog COPYING NEWS README
+%doc AUTHORS COPYING
 
 %files devel
 %defattr(-,root,root)
 %{_bindir}/libart2-config
+%dir %{_includedir}/libart-?.?
 %dir %{_includedir}/libart-?.?/libart_lgpl
 %{_includedir}/libart-?.?/libart_lgpl/*.h
-%{_libdir}/*.a
-%{_libdir}/*.la
-%{_libdir}/*.so
+%{_libdir}/libart_lgpl_2.a
+%{_libdir}/libart_lgpl_2.la
+%{_libdir}/libart_lgpl_2.so
 %{_libdir}/pkgconfig/*
+%doc ChangeLog NEWS README
 
 %changelog
+* Fri Dec 04 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 2.3.21-3mamba
+- rebuilt with debug package and aarch64 build fix
+
 * Sun Jun 27 2010 Automatic Build System <autodist@mambasoft.it> 2.3.21-2mamba
 - automatic rebuild by autodist