diff --git a/ocaml-pcre.spec b/ocaml-pcre.spec
index dce04ce..969a0b1 100644
--- a/ocaml-pcre.spec
+++ b/ocaml-pcre.spec
@@ -1,24 +1,23 @@
-%define ocamlpck  pcre
-
 Name:          ocaml-pcre
-Version:       7.0.4
+Version:       7.4.6
 Release:       1mamba
 Summary:       Perl Compatibility Regular Expressions for OCaml
 Group:         System/Libraries
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           https://bitbucket.org/mmottl/pcre-ocaml
-Source:        https://bitbucket.org/mmottl/pcre-ocaml/downloads/pcre-ocaml-%{version}.tar.gz
+URL:           https://mmottl.github.io/pcre-ocaml/
+Source:        https://github.com/mmottl/pcre-ocaml.git/%{version}/pcre-ocaml-%{version}.tar.bz2
 License:       BSD
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
 BuildRequires: libpcre-devel
-## AUTOBUILDREQ-END
 BuildRequires: ocaml
+BuildRequires: ocaml-runtime
+## AUTOBUILDREQ-END
 BuildRequires: ocaml-ocamldoc
 BuildRequires: ocaml-findlib
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
+BuildRequires: dune
 
 %description
 This OCaml-library interfaces the C-library PCRE (Perl-compatibility Regular Expressions).
@@ -44,52 +43,49 @@ This package includes the %{name} API documentation.
 %setup -q -n pcre-ocaml-%{version}
 
 %build
-./configure \
-   --prefix=%{_prefix} \
-   --libdir=%{_libdir} \
-   --destdir %{buildroot} \
-   --disable-debug
-
-make all
+dune build
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
-export DESTDIR=%{buildroot}
-export OCAMLFIND_DESTDIR=%{buildroot}$(ocamlfind printconf destdir)
-export DLLDIR=$OCAMLFIND_DESTDIR/stublibs
+dune install \
+   --destdir=%{buildroot} \
+   --libdir=%{_libdir}/ocaml
 
-install -d $OCAMLFIND_DESTDIR/%{ocamlpck}
-install -d $OCAMLFIND_DESTDIR/stublibs
-
-make install
-
-rm -fr %{buildroot}%{_datadir}/doc
+rm -r %{buildroot}%{_prefix}/doc
 
 %clean
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
 
 %files
 %defattr(-,root,root)
-%dir %{_libdir}/ocaml/%{ocamlpck}
-%{_libdir}/ocaml/%{ocamlpck}/META
-%{_libdir}/ocaml/%{ocamlpck}/*.cma
-%{_libdir}/ocaml/%{ocamlpck}/*.cmi
-%{_libdir}/ocaml/%{ocamlpck}/*.cmxs
+%dir %{_libdir}/ocaml/pcre
+%{_libdir}/ocaml/pcre/dune-package
+%{_libdir}/ocaml/pcre/META
+%{_libdir}/ocaml/pcre/opam
+%{_libdir}/ocaml/pcre/*.cma
+%{_libdir}/ocaml/pcre/*.cmi
+%{_libdir}/ocaml/pcre/*.cmt
+%{_libdir}/ocaml/pcre/*.cmti
+%{_libdir}/ocaml/pcre/*.cmxs
+%{_libdir}/ocaml/pcre/*.ml
 %{_libdir}/ocaml/stublibs/*.so*
+%doc LICENSE.md
 
 %files devel
 %defattr(-,root,root)
-%{_libdir}/ocaml/%{ocamlpck}/*.a
-%{_libdir}/ocaml/%{ocamlpck}/*.cmx
-%{_libdir}/ocaml/%{ocamlpck}/*.cmxa
-%{_libdir}/ocaml/%{ocamlpck}/*.mli
-%doc examples/
+%{_libdir}/ocaml/pcre/*.a
+%{_libdir}/ocaml/pcre/*.cmx
+%{_libdir}/ocaml/pcre/*.cmxa
+%{_libdir}/ocaml/pcre/*.mli
 
 %files apidocs
 %defattr(-,root,root)
-%doc API.docdir/*
+%doc examples/
 
 %changelog
+* Tue May 04 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 7.4.6-1mamba
+- update to 7.4.6
+
 * Sat Dec 21 2013 Automatic Build System <autodist@mambasoft.it> 7.0.4-1mamba
 - automatic update by autodist