diff --git a/README.md b/README.md
index d6e89aa..b6ca55e 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,4 @@
 # ocamlnet
 
+Internet protocols (http, cgi, email etc.) and helper data structures (mail messages, character sets, etc.).
+
diff --git a/ocamlnet.spec b/ocamlnet.spec
new file mode 100644
index 0000000..66ba2f8
--- /dev/null
+++ b/ocamlnet.spec
@@ -0,0 +1,81 @@
+Name:          ocamlnet
+Version:       4.1.9
+Release:       1mamba
+Summary:       Internet protocols (http, cgi, email etc.) and helper data structures (mail messages, character sets, etc.)
+Group:         System/Libraries/OCaml
+Vendor:        openmamba
+Distribution:  openmamba
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
+URL:           http://projects.camlcity.org/projects/ocamlnet.html
+Source:        http://download.camlcity.org/download/ocamlnet-%{version}.tar.gz
+License:       zlib/png, GPL
+## AUTOBUILDREQ-BEGIN
+BuildRequires: glibc-devel
+BuildRequires: libgnutls-devel
+BuildRequires: libgssglue-devel
+BuildRequires: libnettle-devel
+BuildRequires: ocaml
+BuildRequires: ocaml-pcre-devel
+BuildRequires: ocaml-runtime
+## AUTOBUILDREQ-END
+BuildRequires: dune
+BuildRequires: ocaml
+BuildRequires: ocaml-findlib
+
+%description
+%{summary}.
+
+%package devel
+Group:         Development/Libraries/OCaml
+Summary:       Development files for %{name}
+Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
+
+%description devel
+This package contains libraries and signature files for developing applications that use %{name}.
+
+%debug_package
+
+%prep
+%setup -q
+
+%build
+./configure \
+   -enable-gnutls \
+   -enable-gssapi \
+   -enable-pcre \
+   -bindir %{_bindir}
+
+make all opt
+
+%install
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+export OCAMLFIND_DESTDIR="%{buildroot}/$(ocamlfind printconf destdir)"
+install -dm755 "$OCAMLFIND_DESTDIR/stublibs"
+env DESTDIR="%{buildroot}" make install
+
+%clean
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+
+%files
+%defattr(-,root,root)
+%{_bindir}/netplex-admin
+%{_bindir}/ocamlrpcgen
+%dir %{_libdir}/ocaml/*
+%{_libdir}/ocaml/*/*
+%exclude %{_libdir}/ocaml/*/*.a
+%exclude %{_libdir}/ocaml/*/*.cmx
+%exclude %{_libdir}/ocaml/*/*.cmxa
+%exclude %{_libdir}/ocaml/*/*.mli
+%{_libdir}/ocaml/stublibs/*.so*
+%doc LICENSE*
+
+%files devel
+%defattr(-,root,root)
+%{_libdir}/ocaml/*/*.a
+%{_libdir}/ocaml/*/*.cmx
+%{_libdir}/ocaml/*/*.cmxa
+%{_libdir}/ocaml/*/*.mli
+
+%changelog
+* Sun Feb 06 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 4.1.9-1mamba
+- package created using the webbuild interface