diff --git a/src/ontology/uberon-edit.obo b/src/ontology/uberon-edit.obo
index 9f8f5185d..731fb990b 100644
--- a/src/ontology/uberon-edit.obo
+++ b/src/ontology/uberon-edit.obo
@@ -84444,7 +84444,7 @@ name: lower leg skin
 def: "A zone of skin that is part of a lower leg [Automatically generated definition]." [OBOL:automatic]
 synonym: "hind limb middle limb segment skin" EXACT [OBOL:automatic]
 synonym: "hind limb zeugopod skin" EXACT [OBOL:automatic]
-synonym: "hindlimb zeugopod skin" EXACT [PMID:11943340]
+synonym: "hindlimb zeugopod skin" EXACT [https://orcid.org/0000-0002-0819-0473]
 xref: EMAPA:18156
 xref: MA:0000680
 xref: SCTID:244180007