diff --git a/ocaml-taglib.spec b/ocaml-taglib.spec
index be3de49..6cc163f 100644
--- a/ocaml-taglib.spec
+++ b/ocaml-taglib.spec
@@ -1,21 +1,26 @@
 %define ocamlpck  taglib
 
 Name:          ocaml-taglib
-Version:       0.3.1
-Release:       2mamba
+Version:       0.3.8
+Release:       1mamba
 Summary:       OCaml bindings to taglib
 Group:         Development/Bindings
 Vendor:        openmamba
 Distribution:  openmamba
-Packager:      openmamba WebBuild System <webbuild@openmamba.org>
-URL:           http://savonet.sourceforge.net/
-Source:        http://sourceforge.net/projects/savonet/files/ocaml-taglib/%{version}/ocaml-taglib-%{version}.tar.gz
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
+URL:           https://github.com/savonet/ocaml-taglib
+Source:        https://github.com/savonet/ocaml-taglib.git/v%{version}/ocaml-taglib-%{version}.tar.bz2
 License:       LGPL
 ## AUTOBUILDREQ-BEGIN
-## note: run 'autospec -u -a6 ocaml-taglib' to get the list of build requirements.
+BuildRequires: glibc-devel
+BuildRequires: libgcc
+BuildRequires: libstdc++6-devel
+BuildRequires: libtag-devel
+BuildRequires: libz-devel
+BuildRequires: ocaml
 ## AUTOBUILDREQ-END
+BuildRequires: dune
 BuildRequires: libtag-devel >= 1.9.1
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
 This package contains an O'Caml interface for TagLib Audio Meta-Data Library, otherwise known as taglib.
@@ -33,23 +38,13 @@ This package contains libraries and signature files for developing applications
 %setup -q
 
 %build
-./configure \
-   --prefix=%{_prefix} \
-   --disable-ldconf
-
-make
-make doc
+dune build
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
-export DESTDIR=%{buildroot}
-export OCAMLFIND_DESTDIR=%{buildroot}$(ocamlfind printconf destdir)
-export DLLDIR=$OCAMLFIND_DESTDIR/stublibs
+DESTDIR=%{buildroot} dune install --prefix "/usr" --libdir "%{_lib}/ocaml"
 
-install -d $OCAMLFIND_DESTDIR/%{ocamlpck}
-install -d $OCAMLFIND_DESTDIR/stublibs
-
-make install
+rm -rf %{buildroot}/usr/doc
 
 %clean
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
@@ -57,22 +52,22 @@ make install
 %files
 %defattr(-,root,root)
 %dir %{_libdir}/ocaml/%{ocamlpck}
-%{_libdir}/ocaml/%{ocamlpck}/META
-%{_libdir}/ocaml/%{ocamlpck}/*.cma
-%{_libdir}/ocaml/%{ocamlpck}/*.cmi
+%{_libdir}/ocaml/%{ocamlpck}/*
 %{_libdir}/ocaml/stublibs/*.so*
 %doc COPYING
 
 %files devel
 %defattr(-,root,root)
-%{_libdir}/ocaml/%{ocamlpck}/*.a
-%{_libdir}/ocaml/%{ocamlpck}/*.cmxa
-%{_libdir}/ocaml/%{ocamlpck}/*.cmx
-%{_libdir}/ocaml/%{ocamlpck}/*.mli
-%doc CHANGES README
-%doc doc/html/
+%exclude %{_libdir}/ocaml/%{ocamlpck}/*.a
+%exclude %{_libdir}/ocaml/%{ocamlpck}/*.cmxa
+%exclude %{_libdir}/ocaml/%{ocamlpck}/*.cmx
+%exclude %{_libdir}/ocaml/%{ocamlpck}/*.mli
+%doc CHANGES README.md
 
 %changelog
+* Sun Feb 06 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 0.3.8-1mamba
+- update to 0.3.8
+
 * Tue Dec 29 2015 Silvan Calarco <silvan.calarco@mambasoft.it> 0.3.1-2mamba
 - mass rebuild with libtag 1.9.1