diff --git a/ocaml-csexp.spec b/ocaml-csexp.spec
index a256ea9..551518e 100644
--- a/ocaml-csexp.spec
+++ b/ocaml-csexp.spec
@@ -1,5 +1,5 @@
 Name:          ocaml-csexp
-Version:       1.5.1
+Version:       1.5.2
 Release:       1mamba
 Summary:       Csexp - Canonical S-expressions
 Group:         System/Libraries
@@ -14,6 +14,7 @@ BuildRequires: glibc-devel
 BuildRequires: ocaml
 BuildRequires: ocaml-runtime
 ## AUTOBUILDREQ-END
+BuildRequires: ocaml >= 4.14.1
 BuildRequires: dune
 
 %description
@@ -29,7 +30,7 @@ dune build -p csexp
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
-DESTDIR="%{buildroot}" dune install --prefix "%{_prefix}" --libdir "%{_lib}/ocaml"
+DESTDIR="%{buildroot}" dune install --prefix "%{_prefix}" --libdir "%{_libdir}/ocaml"
 
 rm -r %{buildroot}/usr/doc
 
@@ -42,5 +43,11 @@ rm -r %{buildroot}/usr/doc
 %{_libdir}/ocaml/csexp/*
 
 %changelog
+* Fri Jul 07 2023 Automatic Build System <autodist@mambasoft.it> 1.5.2-1mamba
+- automatic version update by autodist
+
+* Thu Jul 06 2023 Sdk Build System <sdk@mambasoft.it> 1.5.1-2mamba
+- rebuilt with ocaml 4.14.1
+
 * Tue May 04 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 1.5.1-1mamba
 - package created using the webbuild interface