diff --git a/README.md b/README.md
index 2acdea3..d0c6af9 100644
--- a/README.md
+++ b/README.md
@@ -223,6 +223,7 @@ for a specific attribute. An optional **to_ids** boolean field to disable the ID
 - [objects/github-user](https://github.com/MISP/misp-objects/blob/main/objects/github-user/definition.json) - GitHub user.
 - [objects/gitlab-user](https://github.com/MISP/misp-objects/blob/main/objects/gitlab-user/definition.json) - GitLab user. Gitlab.com user or self-hosted GitLab instance.
 - [objects/gtp-attack](https://github.com/MISP/misp-objects/blob/main/objects/gtp-attack/definition.json) - GTP attack object as seen on a GSM, UMTS or LTE network.
+- [objects/hashlookup](https://github.com/MISP/misp-objects/blob/main/objects/hashlookup/definition.json) - hashlookup object as described on hashlookup services from circl.lu - https://www.circl.lu/services/hashlookup.
 - [objects/http-request](https://github.com/MISP/misp-objects/blob/main/objects/http-request/definition.json) - A single HTTP request header.
 - [objects/ilr-impact](https://github.com/MISP/misp-objects/blob/main/objects/ilr-impact/definition.json) - Institut Luxembourgeois de Regulation - Impact.
 - [objects/ilr-notification-incident](https://github.com/MISP/misp-objects/blob/main/objects/ilr-notification-incident/definition.json) - Institut Luxembourgeois de Regulation - Notification d'incident.