diff --git a/meep.spec b/meep.spec
index 0cbe77c..49f3daf 100644
--- a/meep.spec
+++ b/meep.spec
@@ -1,43 +1,36 @@
 Name:          meep
-Version:       1.3
+Version:       1.23.0
 Release:       1mamba
 Summary:       A free finite-difference time-domain (FDTD) simulation software package
 Group:         Applications/Scientific
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           http://ab-initio.mit.edu/wiki/index.php/Meep
-Source:        http://ab-initio.mit.edu/meep/meep-%{version}.tar.gz
+URL:           https://github.com/NanoComp/meep
+Source:        https://github.com/NanoComp/meep.git/v%{version}/meep-%{version}.tar.bz2
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: gcc-fortran
 BuildRequires: glibc-devel
-%ifarch %{ix86}
-BuildRequires: libatlas-3dnow-devel
-%endif
-BuildRequires: libblas-devel
 BuildRequires: libctl-devel
 BuildRequires: libffi-devel
 BuildRequires: libfftw-devel
-BuildRequires: libgcc
 BuildRequires: libgc-devel
+BuildRequires: libgcc
 BuildRequires: libgmp-devel
 BuildRequires: libgsl-devel
 BuildRequires: libguile-devel
 BuildRequires: libharminv-devel
 BuildRequires: libhdf5-devel
-BuildRequires: libltdl-devel
+BuildRequires: libopenblas-devel
 BuildRequires: libquadmath-devel
 BuildRequires: libstdc++6-devel
 BuildRequires: libunistring-devel
 BuildRequires: libz-devel
 ## AUTOBUILDREQ-END
-%ifarch x86_64
-BuildRequires: libatlas-devel
-%endif
 BuildRequires: libunistring-devel >= 0.9.6
+BuildRequires: libharminv-devel >= 1.4.1
 Requires:      lib%{name} = %{?epoch:%epoch:}%{version}-%{release}
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
 Meep (or MEEP) is a free finite-difference time-domain (FDTD) simulation software package developed at MIT to model electromagnetic systems, along with our MPB eigenmode package.
@@ -62,9 +55,11 @@ This package contains libraries and header files for developing applications tha
 
 %prep
 %setup -q
+./autogen.sh
 
 %build
 %configure \
+   --enable-maintainer-mode \
    --enable-shared
 
 %make
@@ -83,28 +78,28 @@ This package contains libraries and header files for developing applications tha
 %defattr(-,root,root)
 %{_bindir}/meep
 %dir %{_datadir}/meep
-%{_datadir}/meep/casimir.scm
-%{_datadir}/meep/meep-enums.scm
-%{_datadir}/meep/meep.scm
+%{_datadir}/meep/*.scm
 
 %files -n lib%{name}
 %defattr(-,root,root)
 %{_libdir}/libmeep.so.*
-%doc AUTHORS COPYING
+%doc AUTHORS COPYRIGHT LICENSE
 
 %files -n lib%{name}-devel
 %defattr(-,root,root)
 %{_includedir}/meep.hpp
 %dir %{_includedir}/meep
-%{_includedir}/meep/mympi.hpp
-%{_includedir}/meep/vec.hpp
+%{_includedir}/meep/*
 %{_libdir}/libmeep.a
 %{_libdir}/libmeep.la
 %{_libdir}/libmeep.so
 %{_libdir}/pkgconfig/meep.pc
-%doc NEWS TODO
+%doc TODO
 
 %changelog
+* Wed May 25 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 1.23.0-1mamba
+- update to 1.23.0
+
 * Sun May 15 2016 Silvan Calarco <silvan.calarco@mambasoft.it> 1.3-1mamba
 - update to 1.3