diff --git a/libmng.spec b/libmng.spec
index 1d3f5c0..01b313e 100644
--- a/libmng.spec
+++ b/libmng.spec
@@ -1,21 +1,20 @@
 Name:          libmng
 Version:       2.0.3
-Release:       1mamba
+Release:       2mamba
 Summary:       A library for handling MNG files
 Group:         System/Libraries
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           http://www.libmng.com
-Source:        http://downloads.sourceforge.net/sourceforge/libmng/%{name}-%{version}.tar.gz
+URL:           https://www.libmng.com
+Source:        https://downloads.sourceforge.net/sourceforge/libmng/%{name}-%{version}.tar.xz
 License:       zlib/libpng
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
 BuildRequires: libjpeg-devel
-BuildRequires: liblcms-devel
+BuildRequires: liblcms2-devel
 BuildRequires: libz-devel
 ## AUTOBUILDREQ-END
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
 The libmng library supports decoding, displaying, encoding, and various other manipulations of the Multiple-image Network Graphics (MNG) format image files.
@@ -24,25 +23,21 @@ It uses the zlib compression library, and optionally the JPEG library by the Ind
 %package devel
 Summary:       Development files for a library for handling MNG files
 Group:         Development/Libraries
-Requires:      %{name} = %{version}
+Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
 
 %description devel
 The libmng library supports decoding, displaying, encoding, and various other manipulations of the Multiple-image Network Graphics (MNG) format image files.
 It uses the zlib compression library, and optionally the JPEG library by the Independent JPEG Group (IJG) and/or lcms (little cms), a color-management library by Marti Maria Saguar.
 This is the development package.
 
+%debug_package
+
 %prep
 %setup -q
 
 %build
-#cp -a makefiles/{configure.in,Makefile.am} .
-#
-#aclocal
-#libtoolize --force
-#automake -a
-#autoconf
-
 %configure
+
 %make
 
 %install
@@ -64,17 +59,21 @@ install -D doc/man/jng.5 %{buildroot}%{_mandir}/man5/jng.5
 %files
 %defattr(-,root,root)
 %{_libdir}/libmng.so.*
+%doc LICENSE
 
 %files devel
 %defattr(-,root,root)
-%{_includedir}/*
-%{_libdir}/libmng.*a
+%{_includedir}/libmng*.h
 %{_libdir}/libmng.so
+%{_libdir}/libmng.a
 %{_mandir}/man3/*
 %{_mandir}/man5/*
 %{_libdir}/pkgconfig/libmng.pc
 
 %changelog
+* Sat May 25 2024 Silvan Calarco <silvan.calarco@mambasoft.it> 2.0.3-2mamba
+- rebuilt with debug package and specfile fixes
+
 * Mon Apr 27 2015 Automatic Build System <autodist@mambasoft.it> 2.0.3-1mamba
 - automatic update by autodist