diff --git a/cjs.spec b/cjs.spec
index b651be0..4147045 100644
--- a/cjs.spec
+++ b/cjs.spec
@@ -1,6 +1,6 @@
 Name:          cjs
 Version:       4.0.0
-Release:       1mamba
+Release:       2mamba
 Summary:       JavaScript bindings based on gobject-introspection
 Group:         Development/Tools
 Vendor:        openmamba
@@ -48,7 +48,7 @@ BuildRequires: libuuid-devel
 BuildRequires: libxcb-devel
 BuildRequires: libz-devel
 ## AUTOBUILDREQ-END
-BuildRequires: libmozjs-devel >= 52
+BuildRequires: libmozjs-devel >= 52.6.0
 Requires:      lib%{name} = %{?epoch:%epoch:}%{version}-%{release}
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
@@ -116,6 +116,9 @@ This package contains libraries and header files for developing applications tha
 %doc NEWS README
 
 %changelog
+* Wed Dec 12 2018 Silvan Calarco <silvan.calarco@mambasoft.it> 4.0.0-2mamba
+- rebuilt with libmozjs 52.6.0
+
 * Thu Nov 01 2018 Automatic Build System <autodist@mambasoft.it> 4.0.0-1mamba
 - automatic version update by autodist