diff --git a/ocaml-fdkaac.spec b/ocaml-fdkaac.spec
index 17e04de..64f1ddb 100644
--- a/ocaml-fdkaac.spec
+++ b/ocaml-fdkaac.spec
@@ -2,7 +2,7 @@
 
 Name:          ocaml-fdkaac
 Version:       0.3.2
-Release:       1mamba
+Release:       2mamba
 Summary:       OCaml binding for the fdk-aac library
 Group:         System/Libraries/OCaml
 Vendor:        openmamba
@@ -15,7 +15,9 @@ License:       GPL
 BuildRequires: glibc-devel
 BuildRequires: libfdk-aac-devel
 BuildRequires: ocaml
+BuildRequires: ocaml-runtime
 ## AUTOBUILDREQ-END
+BuildRequires: ocaml >= 4.14.1
 BuildRequires: dune
 BuildRequires: ocaml-findlib
 
@@ -40,7 +42,7 @@ 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
 
@@ -67,5 +69,8 @@ rm -rf %{buildroot}/usr/doc
 %doc CHANGES* README.md
 
 %changelog
+* Fri Jul 07 2023 Sdk Build System <sdk@mambasoft.it> 0.3.2-2mamba
+- rebuilt with ocaml 4.14.1
+
 * Sun Feb 13 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 0.3.2-1mamba
 - package created using the webbuild interface