diff --git a/libraptor.spec b/libraptor.spec
index e3f1fc2..ec2ae03 100644
--- a/libraptor.spec
+++ b/libraptor.spec
@@ -1,6 +1,6 @@
 Name:          libraptor
 Version:       1.4.21
-Release:       3mamba
+Release:       4mamba
 Summary:       An RDF Parser Toolkit
 Group:         System/Libraries
 Vendor:        openmamba
@@ -11,13 +11,14 @@ Source:        http://librdf.org/dist/source/raptor-%{version}.tar.gz
 Patch0:        %{name}-1.4.21-curl-7.21.patch
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
-BuildRequires: gtk-doc
+BuildRequires: ldconfig
 BuildRequires: libcurl-devel
+BuildRequires: liblzma-devel
 BuildRequires: libxml2-devel
 BuildRequires: libxslt-devel
 BuildRequires: libz-devel
 ## AUTOBUILDREQ-END
-BuildRequires: libwww-devel
+#BuildRequires: libwww-devel
 BuildRequires: libexpat-devel
 BuildRequires: libcares-devel
 BuildRequires: libssh2-devel
@@ -39,8 +40,7 @@ Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
 Raptor is a free software / Open Source C library that provides a set of parsers and serializers that generate Resource Description Framework (RDF) triples by parsing syntaxes or serialize the triples into a syntax.
 The supported parsing syntaxes are RDF/XML, N-Triples, Turtle, RSS tag soup including Atom 0.3 and the serializing syntaxes are RDF/XML, N-Triples and RSS 1.0.
 Raptor was designed to work closely with the Redland RDF library (RDF Parser Toolkit for Redland) but is entirely separate. It is a portable library that works across many POSIX systems (Unix, GNU/Linux, BSDs, OSX, cygwin, win32). Raptor has no memory leaks and is fast. 
-
-This package contains static libraries and header files need for development.
+This package contains static libraries and header files needed for development.
 
 %package apidocs
 Summary:       Raptor API documentation
@@ -50,8 +50,11 @@ Requires:      gtk-doc
 %description apidocs
 Raptor API documentation.
 
+%debug_package
+
 %prep
 %setup -q -n raptor-%{version}
+sed -i "s,| arm-\*  |,| aarch64-\* | arm-\*  |," build/config.sub
 %patch0 -p1
 
 %build
@@ -71,7 +74,7 @@ Raptor API documentation.
 %files
 %defattr(-,root,root)
 %{_libdir}/libraptor.so.*
-%doc AUTHORS COPYING COPYING.LIB ChangeLog NEWS README README.html
+%doc AUTHORS COPYING COPYING.LIB
 
 %files devel
 %defattr(-,root,root)
@@ -84,12 +87,16 @@ Raptor API documentation.
 %{_mandir}/man1/rapper.*
 %{_mandir}/man1/raptor-config.*
 %{_mandir}/man3/libraptor.*
+%doc ChangeLog NEWS README README.html
 
 %files apidocs
 %defattr(-,root,root)
 %{_datadir}/gtk-doc/html/raptor
 
 %changelog
+* Sat Dec 12 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 1.4.21-4mamba
+- rebuilt with debug package
+
 * Wed Nov 30 2011 Silvan Calarco <silvan.calarco@mambasoft.it> 1.4.21-3mamba
 - rebuilt with recent curl (added patch) and added build requirement for libgss-devel