diff --git a/ocaml-speex.spec b/ocaml-speex.spec
index 378308e..4d14023 100644
--- a/ocaml-speex.spec
+++ b/ocaml-speex.spec
@@ -2,13 +2,13 @@
 
 Name:          ocaml-speex
 Version:       0.4.1
-Release:       1mamba
+Release:       3mamba
 Summary:       OCaml bindings to libspeex
 Group:         Development/Bindings
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           http://savonet.sourceforge.net/
+URL:           https://savonet.sourceforge.net/
 Source:        https://github.com/savonet/ocaml-speex.git/v%{version}/ocaml-speex-%{version}.tar.bz2
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
@@ -17,9 +17,11 @@ BuildRequires: libogg-devel
 BuildRequires: libspeex-devel
 BuildRequires: ocaml
 BuildRequires: ocaml-ogg-devel
+BuildRequires: ocaml-runtime
 ## AUTOBUILDREQ-END
+BuildRequires: ocaml-ogg-devel >= 0.7.4
+BuildRequires: ocaml >= 4.14.1
 BuildRequires: dune
-BuildRequires: ocaml
 BuildRequires: ocaml-findlib
 BuildRequires: camlidl
 
@@ -44,7 +46,7 @@ dune build
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
-DESTDIR=%{buildroot} dune install --prefix "/usr" --libdir "%{_lib}/ocaml"
+DESTDIR=%{buildroot} dune install --prefix "/usr" --libdir "%{_libdir}/ocaml"
 
 rm -rf %{buildroot}/usr/doc
 
@@ -80,6 +82,12 @@ rm -rf %{buildroot}/usr/doc
 %doc examples/
 
 %changelog
+* Sun Jul 16 2023 Sdk Build System <sdk@mambasoft.it> 0.4.1-3mamba
+- rebuilt with ocaml-ogg 0.7.4
+
+* Thu Jul 06 2023 Sdk Build System <sdk@mambasoft.it> 0.4.1-2mamba
+- rebuilt with ocaml 4.14.1
+
 * Mon Feb 07 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 0.4.1-1mamba
 - update to 0.4.1