diff --git a/licenses.json b/licenses.json
index 0380142b9ed86cdac02c6def8c5557a716b5ab7f..16a2cd6d1e7b3f8a4077f3f282c7e0fe57f7638a 100644
--- a/licenses.json
+++ b/licenses.json
@@ -28,6 +28,7 @@
     "title": "Creative Commons CC Zero License (cc-zero)",
     "url": "http://www.opendefinition.org/licenses/cc-zero",
     "status": "active",
+    "is_okd_compliant": true,
     "od_conformance": "not reviewed",
     "osd_conformance": "not reviewed"
   },