diff --git a/README.md b/README.md
index 40c7bcb..6a4ace3 100644
--- a/README.md
+++ b/README.md
@@ -59,6 +59,7 @@ allowing advanced users to show all the attributes depending of their configurat
 
 * [objects/domain-ip](objects/domain-ip/definition.json) - A domain and IP address seen as a tuple in a specific time frame.
 * [objects/file](objects/file/definition.json) - File object describing a file with meta-information.
+* [objects/ip-port](objects/ip-port/definition.json) - An IP address and a port seen as a tuple (or as a triple) in a specific time frame.
 * [objects/passive-dns](objects/file/definition.json) - Passive DNS records as expressed in [draft-dulaunoy-dnsop-passive-dns-cof-01](https://tools.ietf.org/html/draft-dulaunoy-dnsop-passive-dns-cof-01).
 * [objects/whois](objects/whois/definition.json) - Whois records information for a domain name.