diff --git a/ocaml-srt.spec b/ocaml-srt.spec
index 8af8846..96fab2a 100644
--- a/ocaml-srt.spec
+++ b/ocaml-srt.spec
@@ -1,8 +1,8 @@
 %define ocamlpck  srt
 
 Name:          ocaml-srt
-Version:       0.2.1
-Release:       3mamba
+Version:       0.3.0
+Release:       2mamba
 Summary:       OCaml bindings for the Secure, Reliable, Transport protocol library 
 Group:         System/Libraries/OCaml
 Vendor:        openmamba
@@ -19,7 +19,9 @@ BuildRequires: ocaml-bigarray-compat-devel
 BuildRequires: ocaml-ctypes-devel
 BuildRequires: ocaml-integers
 BuildRequires: ocaml-posix-devel
+BuildRequires: ocaml-runtime
 ## AUTOBUILDREQ-END
+BuildRequires: ocaml >= 4.14.1
 BuildRequires: dune
 BuildRequires: ocaml-findlib
 BuildRequires: ocaml-ctypes-devel >= 0.20.1
@@ -46,7 +48,7 @@ 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
 
@@ -73,6 +75,12 @@ rm -rf %{buildroot}/usr/doc
 %doc CHANGES* README.md
 
 %changelog
+* Thu Jul 06 2023 Sdk Build System <sdk@mambasoft.it> 0.3.0-2mamba
+- rebuilt with ocaml 4.14.1
+
+* Sat Apr 01 2023 Automatic Build System <autodist@mambasoft.it> 0.3.0-1mamba
+- automatic version update by autodist
+
 * Sat May 14 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 0.2.1-3mamba
 - rebuilt with ocaml-ctypes 0.20.1