diff --git a/ocaml-unix-errno.spec b/ocaml-unix-errno.spec
index aa285e8..89e0476 100644
--- a/ocaml-unix-errno.spec
+++ b/ocaml-unix-errno.spec
@@ -1,7 +1,7 @@
 %define ocamlpck  unix-errno
 Name:          ocaml-unix-errno
-Version:       0.6.1
-Release:       3mamba
+Version:       0.6.2
+Release:       1mamba
 Summary:       Unix errno types, maps, and support for OCaml
 Group:         System/Libraries/OCaml
 Vendor:        openmamba
@@ -17,7 +17,9 @@ BuildRequires: ocaml-bigarray-compat-devel
 BuildRequires: ocaml-ctypes-devel
 BuildRequires: ocaml-integers
 BuildRequires: ocaml-result
+BuildRequires: ocaml-runtime
 ## AUTOBUILDREQ-END
+BuildRequires: ocaml >= 4.14.1
 BuildRequires: ocaml-ctypes-devel >= 0.20.1
 BuildRequires: dune
 
@@ -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
 
@@ -72,6 +74,12 @@ rm -rf %{buildroot}/usr/doc
 
 
 %changelog
+* Fri Jul 21 2023 Silvan Calarco <silvan.calarco@mambasoft.it> 0.6.2-1mamba
+- update to 0.6.2
+
+* Thu Jul 06 2023 Sdk Build System <sdk@mambasoft.it> 0.6.1-4mamba
+- rebuilt with ocaml 4.14.1
+
 * Sat May 14 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 0.6.1-3mamba
 - rebuilt with ocaml-ctypes 0.20.1