diff --git a/libjson-c.spec b/libjson-c.spec
index 9cb79b8..23fa270 100644
--- a/libjson-c.spec
+++ b/libjson-c.spec
@@ -1,5 +1,6 @@
+%define gitver %(echo %version | tr _ -)
 Name:          libjson-c
-Version:       0.12
+Version:       0.12.1_20160607
 Release:       1mamba
 Summary:       A reference counting object model that allows you to easily construct JSON objects in C
 Group:         System/Libraries
@@ -7,7 +8,7 @@ Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
 URL:           http://oss.metaparadigm.com/json-c/
-Source:        https://github.com/json-c/json-c.git/json-c-%{version}/json-c-%{version}.tar.bz2
+Source:        https://github.com/json-c/json-c.git/json-c-%{gitver}/json-c-%{version}.tar.bz2
 #Source:        http://oss.metaparadigm.com/json-c/json-c-%{version}.tar.gz
 License:       MIT
 ## AUTOBUILDREQ-BEGIN
@@ -73,6 +74,9 @@ This package contains libraries and header files for developing applications tha
 %doc ChangeLog NEWS README README.html README-WIN32.html
 
 %changelog
+* Sun Jul 31 2016 Silvan Calarco <silvan.calarco@mambasoft.it> 0.12.1_20160607-1mamba
+- update to 0.12.1_20160607
+
 * Mon Jun 16 2014 Automatic Build System <autodist@mambasoft.it> 0.12-1mamba
 - automatic version update by autodist