diff --git a/ocamlbuild.spec b/ocamlbuild.spec
index 07bb078..3f5cb73 100644
--- a/ocamlbuild.spec
+++ b/ocamlbuild.spec
@@ -1,6 +1,6 @@
 Name:          ocamlbuild
 Version:       0.14.0
-Release:       1mamba
+Release:       2mamba
 Summary:       A generic build tool, that has built-in rules for building OCaml library and programs
 Group:         Development/Tools
 Vendor:        openmamba
@@ -45,5 +45,8 @@ OCamlbuild is a generic build tool, that has built-in rules for building OCaml l
 %doc LICENSE
 
 %changelog
+* Thu May 09 2019 Silvan Calarco <silvan.calarco@mambasoft.it> 0.14.0-2mamba
+- make sure build is against ocaml 4.07.1
+
 * Sun Apr 21 2019 Silvan Calarco <silvan.calarco@mambasoft.it> 0.14.0-1mamba
 - package created using the webbuild interface