diff --git a/README.md b/README.md
index 6494d59..27487e5 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,4 @@
 # ocaml-bigarray-compat
 
+Compatibility library to use Stdlib.Bigarray when possible.
+
diff --git a/ocaml-bigarray-compat.spec b/ocaml-bigarray-compat.spec
new file mode 100644
index 0000000..070736b
--- /dev/null
+++ b/ocaml-bigarray-compat.spec
@@ -0,0 +1,74 @@
+%define ocamlpck  bigarray-compat
+
+Name:          ocaml-bigarray-compat
+Version:       1.1.0
+Release:       1mamba
+Summary:       Compatibility library to use Stdlib.Bigarray when possible
+Group:         System/Libraries/OCaml
+Vendor:        openmamba
+Distribution:  openmamba
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
+URL:           https://github.com/mirage/bigarray-compat
+Source:        https://github.com/mirage/bigarray-compat.git/v%{version}/bigarray-compat-%{version}.tar.bz2
+License:       Apache License 2.0
+## AUTOBUILDREQ-BEGIN
+BuildRequires: glibc-devel
+BuildRequires: ocaml
+## AUTOBUILDREQ-END
+BuildRequires: dune
+BuildRequires: ocaml
+BuildRequires: ocaml-camlp4-devel
+BuildRequires: ocaml-findlib
+Requires:      ocaml-runtime
+
+%description
+Compatibility library to use Stdlib.Bigarray when possible.
+
+%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 -n bigarray-compat-%{version}
+
+%build
+dune build -p bigarray-compat
+
+%install
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+DESTDIR="%{buildroot}" dune install --prefix "/usr" --libdir "%{_lib}/ocaml"
+
+rm -rf %{buildroot}/usr/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
+%{_libdir}/ocaml/%{ocamlpck}/*.cmt
+%{_libdir}/ocaml/%{ocamlpck}/bigarray_compat.ml
+%{_libdir}/ocaml/%{ocamlpck}/dune-package
+%{_libdir}/ocaml/%{ocamlpck}/opam
+%doc LICENSE.md
+
+%files devel
+%defattr(-,root,root)
+%{_libdir}/ocaml/%{ocamlpck}/*.a
+%{_libdir}/ocaml/%{ocamlpck}/*.cmx
+%{_libdir}/ocaml/%{ocamlpck}/*.cmxa
+%doc CHANGES.md README.md
+
+%changelog
+* Sat Jan 29 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 1.1.0-1mamba
+- package created using the webbuild interface