diff --git a/ocaml-ffmpeg.spec b/ocaml-ffmpeg.spec
index c2df878..a1b4416 100644
--- a/ocaml-ffmpeg.spec
+++ b/ocaml-ffmpeg.spec
@@ -1,7 +1,8 @@
 %define ocamlpck  ffmpeg
+%define gittag %(eho %version | cut -d. -f5)
 
 Name:          ocaml-ffmpeg
-Version:       0.4.3
+Version:       1.1.1.20220202git.a514383
 Release:       1mamba
 Summary:       OCaml bindings to the FFmpeg library
 Group:         Development/Bindings
@@ -9,19 +10,18 @@ Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
 URL:           https://github.com/savonet/ocaml-ffmpeg
-Source:        https://github.com/savonet/ocaml-ffmpeg/releases/download/v%{version}/ocaml-ffmpeg-%{version}.tar.gz
-#Source:        http://sourceforge.net/projects/savonet/files/ocaml-ffmpeg/%{version}/ocaml-ffmpeg-%{version}.tar.gz
+Source:        https://github.com/savonet/ocaml-ffmpeg.git/main@%{gittag}/ocaml-ffmpeg-%{version}.tar.bz2
 License:       LGPL
 ## AUTOBUILDREQ-BEGIN
-BuildRequires: libpulseaudio-devel
+BuildRequires: glibc-devel
 BuildRequires: libavcodec-ffmpeg-devel
 BuildRequires: libavdevice-ffmpeg-devel
 BuildRequires: libavfilter-ffmpeg-devel
 BuildRequires: libavformat-ffmpeg-devel
 BuildRequires: libavutil-ffmpeg-devel
-BuildRequires: libpostproc-ffmpeg-devel
-BuildRequires: libswscale-ffmpeg-devel
 BuildRequires: libswresample-ffmpeg-devel
+BuildRequires: libswscale-ffmpeg-devel
+BuildRequires: ocaml
 ## AUTOBUILDREQ-END
 
 %description
@@ -39,26 +39,15 @@ This package contains libraries and signature files for developing applications
 
 %prep
 %setup -q
-./bootstrap
 
 %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}"
@@ -66,10 +55,15 @@ make install
 %files
 %defattr(-,root,root)
 %dir %{_libdir}/ocaml/%{ocamlpck}
-%{_libdir}/ocaml/%{ocamlpck}/META
-%{_libdir}/ocaml/%{ocamlpck}/*.cma
-%{_libdir}/ocaml/%{ocamlpck}/*.cmi
-%{_libdir}/ocaml/stublibs/*.so*
+%{_libdir}/ocaml/%{ocamlpck}/*
+%exclude %{_libdir}/ocaml/%{ocamlpck}/*.cmxa
+%exclude %{_libdir}/ocaml/%{ocamlpck}/*.cmx
+%dir %{_libdir}/ocaml/ffmpeg-*
+%{_libdir}/ocaml/ffmpeg-*/*
+%exclude %{_libdir}/ocaml/ffmpeg-*/*.cmi
+%exclude %{_libdir}/ocaml/ffmpeg-*/*.cmx
+%exclude %{_libdir}/ocaml/ffmpeg-*/*.cmxa
+%exclude %{_libdir}/ocaml/stublibs/*.so*
 %doc COPYING
 
 %files devel
@@ -77,11 +71,18 @@ make install
 %{_libdir}/ocaml/%{ocamlpck}/*.a
 %{_libdir}/ocaml/%{ocamlpck}/*.cmxa
 %{_libdir}/ocaml/%{ocamlpck}/*.cmx
-%{_libdir}/ocaml/%{ocamlpck}/*.mli
-%doc CHANGES
-#%doc doc/html/
+%{_libdir}/ocaml/ffmpeg-*/*.cmi
+%{_libdir}/ocaml/ffmpeg-*/*.cmx
+%{_libdir}/ocaml/ffmpeg-*/*.cmxa
+%doc CHANGES README.md
 
 %changelog
+* Sun Feb 06 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 1.1.1.20220202git.a514383-1mamba
+- update to 1.1.1.20220202git.a514383
+
+* Sat Jan 29 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 1.1.1-1mamba
+- update to 1.1.1
+
 * Fri Feb 26 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 0.4.3-1mamba
 - update to 0.4.3