diff --git a/ocaml-faad.spec b/ocaml-faad.spec
index 637d927..6fa00f7 100644
--- a/ocaml-faad.spec
+++ b/ocaml-faad.spec
@@ -2,7 +2,7 @@
 
 Name:          ocaml-faad
 Version:       0.5.1
-Release:       1mamba
+Release:       2mamba
 Summary:       OCaml bindings for the libfaad AAC decoder library
 Group:         Development/Bindings
 Vendor:        openmamba
@@ -15,9 +15,10 @@ License:       GPL
 BuildRequires: glibc-devel
 BuildRequires: libfaad2-devel
 BuildRequires: ocaml
+BuildRequires: ocaml-runtime
 ## AUTOBUILDREQ-END
+BuildRequires: ocaml >= 4.14.1
 BuildRequires: dune
-BuildRequires: ocaml
 BuildRequires: ocaml-findlib
 BuildRequires: camlidl
 
@@ -42,7 +43,7 @@ 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
 
@@ -69,6 +70,9 @@ rm -rf %{buildroot}/usr/doc
 %doc CHANGES README.md
 
 %changelog
+* Thu Jul 06 2023 Sdk Build System <sdk@mambasoft.it> 0.5.1-2mamba
+- rebuilt with ocaml 4.14.1
+
 * Mon May 23 2022 Automatic Build System <autodist@mambasoft.it> 0.5.1-1mamba
 - automatic version update by autodist