diff --git a/ocaml-mmap.spec b/ocaml-mmap.spec
index f41c555..8e29cbe 100644
--- a/ocaml-mmap.spec
+++ b/ocaml-mmap.spec
@@ -2,7 +2,7 @@
 
 Name:          ocaml-mmap
 Version:       1.2.0
-Release:       1mamba
+Release:       2mamba
 Summary:       Provides a Mmap.map_file functions for mapping files in memory
 Group:         System/Libraries/OCaml
 Vendor:        openmamba
@@ -15,9 +15,10 @@ License:       LGPL
 BuildRequires: glibc-devel
 BuildRequires: ocaml
 BuildRequires: ocaml-bigarray-compat-devel
+BuildRequires: ocaml-runtime
 ## AUTOBUILDREQ-END
+BuildRequires: ocaml >= 4.14.1
 BuildRequires: dune
-BuildRequires: ocaml
 BuildRequires: ocaml-findlib
 
 %description
@@ -41,7 +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
 
@@ -67,6 +68,9 @@ rm -rf %{buildroot}/usr/doc
 %doc CHANGES* README.md
 
 %changelog
+* Thu Jul 06 2023 Sdk Build System <sdk@mambasoft.it> 1.2.0-2mamba
+- rebuilt with ocaml 4.14.1
+
 * Sat Mar 05 2022 Automatic Build System <autodist@mambasoft.it> 1.2.0-1mamba
 - automatic version update by autodist