diff --git a/libmapnik.spec b/libmapnik.spec
index fa28f3a..34f5b32 100644
--- a/libmapnik.spec
+++ b/libmapnik.spec
@@ -1,5 +1,5 @@
 Name:          libmapnik
-Version:       3.0.21
+Version:       3.0.23
 Release:       1mamba
 Summary:       A Free Toolkit for developing mapping applications
 Group:         System/Tools
@@ -14,6 +14,7 @@ Patch1:        libmapnik-3.0.15-icu-59.patch
 License:       LGPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
+BuildRequires: ldconfig
 BuildRequires: libboost-devel
 BuildRequires: libcairo-devel
 BuildRequires: libfreetype-devel
@@ -24,7 +25,6 @@ BuildRequires: libicu-devel
 BuildRequires: libjpeg-devel
 BuildRequires: libpng-devel
 BuildRequires: libpostgresql-devel
-BuildRequires: libproj-devel
 BuildRequires: libsqlite-devel
 BuildRequires: libstdc++6-devel
 BuildRequires: libtiff-devel
@@ -47,26 +47,36 @@ Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
 Mapnik is a Free Toolkit for developing mapping applications. Above all Mapnik is about making beautiful maps. It is easily extensible and suitable for both desktop and web development.
 This is the devel package.
 
+%debug_package
+
 %prep
 %setup -q -n mapnik-v%{version}
 #-D -T
 #:<< _EOF
 #%patch1 -p1
 
+%ifarch x86_64
+sed -i "s|LIBDIR_SCHEMA_DEFAULT=.*|LIBDIR_SCHEMA_DEFAULT='lib64'|" SConstruct
+%endif
+
 %build
 #:<< _EOF
-%{__python} scons/scons.py configure \
+export PYTHON=%{__python3}
+
+%configure \
    PREFIX=%{_prefix} \
    LIBDIR_SCHEMA=%{_lib} \
-   THREADING=multi \
-   CUSTOM_LDFLAGS="-L%{_libdir} -ldl"
+   DESTDIR=%{buildroot} \
+   PYTHON=%{__python3} \
+   CUSTOM_LDFLAGS="-L%{_libdir} -ldl" \
+   THREADING=multi
 
-%make
+%make PYTHON=%{__python3}
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
-sed -i "s|max-drift=1 install|max-drift=1 install DESTDIR=%{buildroot}|" Makefile
-%makeinstall
+#sed -i "s|max-drift=1 install|max-drift=1 install DESTDIR=%{buildroot}|" Makefile
+%makeinstall PYTHON=%{__python3}
 #%{__python} scons/scons.py install \
 #   DESTDIR=%{buildroot} %{_smp_mflags}
 
@@ -101,6 +111,9 @@ sed -i "s|max-drift=1 install|max-drift=1 install DESTDIR=%{buildroot}|" Makefil
 #%doc README
 
 %changelog
+* Sun Sep 06 2020 Automatic Build System <autodist@mambasoft.it> 3.0.23-1mamba
+- automatic version update by autodist
+
 * Sun Oct 14 2018 Automatic Build System <autodist@mambasoft.it> 3.0.21-1mamba
 - automatic version update by autodist