diff --git a/ebi_ontologies.json b/ebi_ontologies.json
index 6aad933c..590828d7 100644
--- a/ebi_ontologies.json
+++ b/ebi_ontologies.json
@@ -27,6 +27,23 @@
       "ontology_purl": "https://github.com/biolink/biolink-model/raw/master/project/owl/biolink_model.owl.ttl",
       "homepage": "https://biolink.github.io/biolink-model/"
     },
+    {
+      "id": "addicto",
+      "is_foundary": "true",
+      "preferredPrefix": "ADDICTO",
+      "title": "Addiction Ontology",
+      "uri": "http://addictovocab.org/addicto.owl",
+      "description": "The Addiction Ontology (AddictO) is an ontology being developed all aspects of addiction research.",
+      "homepage": "https://addictovocab.org",
+      "label_property": ["http://www.w3.org/2000/01/rdf-schema#label"],
+      "definition_property": ["http://purl.obolibrary.org/obo/IAO_0000115"],
+      "synonym_property": ["http://purl.obolibrary.org/obo/IAO_0000118"],
+      "hierarchical_property": ["http://purl.obolibrary.org/obo/BFO_0000050"],
+      "hidden_property": null,
+      "base_uri": ["http://addictovocab.org/ADDICTO_"],
+      "oboSlims": "false",
+      "ontology_purl": "http://addictovocab.org/addicto.owl"
+    },
     {
       "id": "dhba",
       "creator": [