diff --git a/README.md b/README.md
index c83773e..96907c6 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 [![Build Status](https://travis-ci.org/MISP/misp-objects.svg?branch=master)](https://travis-ci.org/MISP/misp-objects)
 
-MISP objects to be used in MISP (3.0) system and can be used by other information sharing tool. MISP objects
+MISP objects to be used in MISP (2.4.80 (TBC)) system and can be used by other information sharing tool. MISP objects
 are in addition to MISP attributes to allow advanced combinations of attributes. The creation of these objects
 and their associated attributes are based on real cyber security use-cases and existing practices in information sharing.
 
@@ -84,6 +84,12 @@ for a specific attribute.
 * [objects/whois](objects/whois/definition.json) - Whois records information for a domain name.
 * [objects/x509](objects/x509/definition.json) - x509 object describing a X.509 certificate.
 
+## MISP objects relationships
+
+The MISP object model is open and allows user to use their own relationships. MISP provides a list of default relationships that can be used if you plan to share your events with other MISP communities.
+
+- [relationships](relationships/definition.json) - list of predefined default relationships which can be used to link MISP objects together and explain the context of the relationship.
+
 ## How to contribute MISP objects?
 
 Fork the project, create a new directory in the [objects directory](objects/) matching your object name. Objects must be composed