diff --git a/ocaml-num.spec b/ocaml-num.spec
index 74a9884..aa8db21 100644
--- a/ocaml-num.spec
+++ b/ocaml-num.spec
@@ -1,6 +1,6 @@
 Name:          ocaml-num
-Version:       1.1
-Release:       1mamba
+Version:       1.3
+Release:       2mamba
 Summary:       Legacy Num Ocaml library for arbitrary-precision integer and rational arithmetic
 Group:         System/Libraries
 Vendor:        openmamba
@@ -14,6 +14,7 @@ License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
 ## AUTOBUILDREQ-END
+BuildRequires: ocaml >= 4.09.0-4mamba
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
@@ -21,7 +22,7 @@ The legacy Num library for arbitrary-precision integer and rational arithmetic t
 
 %prep
 %setup -q -n num-%{version}
-%patch0 -p1
+#%patch0 -p1
 
 %build
 %make
@@ -46,5 +47,14 @@ make OCAMLFIND_DESTDIR="%{buildroot}$(ocamlfind printconf destdir)" findlib-inst
 %doc LICENSE
 
 %changelog
+* Mon Dec 30 2019 Silvan Calarco <silvan.calarco@mambasoft.it> 1.3-2mamba
+- rebuilt with ocaml 4.09.0-4mamba
+
+* Sat Dec 07 2019 Automatic Build System <autodist@mambasoft.it> 1.3-1mamba
+- automatic version update by autodist
+
+* Mon Jul 22 2019 Automatic Build System <autodist@mambasoft.it> 1.2-1mamba
+- automatic version update by autodist
+
 * Sun Apr 21 2019 Silvan Calarco <silvan.calarco@mambasoft.it> 1.1-1mamba
 - package created using the webbuild interface