diff --git a/xabacus.spec b/xabacus.spec
index b9d0ccc..04bce91 100644
--- a/xabacus.spec
+++ b/xabacus.spec
@@ -1,30 +1,33 @@
 Name:          xabacus
-Version:       8.0.2
+Version:       8.3.7
 Release:       1mamba
 Summary:       An implementation of the classic Chinese abacus which has its origins in the 12th century.
 Group:         Graphical Desktop/Applications/Educational
 Vendor:        openmamba
 Distribution:  openmamba
-Packager:      Tiziana Ferro <tiziana.ferro@email.it>
-URL:           http://www.tux.org/~bagleyd/xabacus.html
-Source:        http://www.tux.org/~bagleyd/abacus/%{name}-%{version}.tar.bz2
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
+URL:           http://www.sillycycle.com/abacus/
+Source:        http://www.sillycycle.com/abacus/xabacus-%{version}.tar.xz
 License:       GPL
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
-BuildRequires: libaudiofile-devel
-BuildRequires: libesound-devel
 BuildRequires: libICE-devel
-BuildRequires: liblesstif-devel
 BuildRequires: libSM-devel
 BuildRequires: libX11-devel
 BuildRequires: libXpm-devel
 BuildRequires: libXt-devel
+BuildRequires: libaudiofile-devel
+BuildRequires: liblesstif-devel
+BuildRequires: liblzma-devel
+BuildRequires: libxml2-devel
+BuildRequires: libz-devel
 ## AUTOBUILDREQ-END
 
 %description
 xabacus is an implementation of the classic Chinese abacus which has its origins in the 12th century.
 
+%debug_package
+
 %prep
 %setup -q 
 
@@ -62,7 +65,7 @@ EOF
 %files
 %defattr(-,root,root)
 %{_bindir}/*
-%{_libdir}/X11/app-defaults/*
+%{_prefix}/lib/X11/app-defaults/Abacus
 %{_datadir}/games/xabacus/*
 %{_datadir}/pixmaps/*/abacus.png
 %{_datadir}/applications/xabacus.desktop
@@ -70,6 +73,9 @@ EOF
 %doc README
 
 %changelog
+* Sat Jun 05 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 8.3.7-1mamba
+- update to 8.3.7
+
 * Fri Dec 19 2014 Automatic Build System <autodist@mambasoft.it> 8.0.2-1mamba
 - automatic update by autodist