diff --git a/ocaml-ctypes.spec b/ocaml-ctypes.spec
index 27372fe..af78afd 100644
--- a/ocaml-ctypes.spec
+++ b/ocaml-ctypes.spec
@@ -2,26 +2,28 @@
 %define ocamlpck  ctypes
 
 Name:          ocaml-ctypes
-Version:       0.16.0
-Release:       1mamba
+Version:       0.17.1
+Release:       2mamba
 Summary:       Combinators for binding to C libraries without writing any C
 Group:         System/Libraries/OCaml
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
 URL:           https://github.com/ocamllabs/ocaml-ctypes
-## GITSOURCE https://github.com/ocamllabs/ocaml-ctypes.git 0.5.1
 Source:        https://github.com/ocamllabs/ocaml-ctypes.git/%{version}/ocaml-ctypes-%{version}.tar.bz2
 License:       BSD
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
+BuildRequires: ldconfig
 BuildRequires: libffi-devel
+BuildRequires: ocaml-integers
+BuildRequires: ocaml-runtime
 ## AUTOBUILDREQ-END
 BuildRequires: ocaml
 BuildRequires: ocaml-camlp4-devel
 BuildRequires: ocaml-findlib
-BuildRequires: ocaml-integers >= 0.2.2-2mamba
-BuildRequires: ocaml >= 4.09.0-4mamba
+BuildRequires: ocaml-integers >= 0.4.0
+BuildRequires: ocaml >= 4.11.1
 Requires:      ocaml-runtime
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
@@ -80,6 +82,15 @@ make install
 # %doc CHANGES README
 
 %changelog
+* Thu Jan 21 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 0.17.1-2mamba
+- rebuilt with ocaml 4.11.1
+
+* Mon Mar 23 2020 Automatic Build System <autodist@mambasoft.it> 0.17.1-1mamba
+- automatic version update by autodist
+
+* Sun Mar 22 2020 Automatic Build System <autodist@mambasoft.it> 0.17.0-1mamba
+- automatic version update by autodist
+
 * Mon Dec 30 2019 Silvan Calarco <silvan.calarco@mambasoft.it> 0.16.0-1mamba
 - update to 0.16.0