diff --git a/models/src/main/thrift/content/v1.thrift b/models/src/main/thrift/content/v1.thrift
index 67bfdca..0c13571 100644
--- a/models/src/main/thrift/content/v1.thrift
+++ b/models/src/main/thrift/content/v1.thrift
@@ -898,7 +898,8 @@ struct ListItem {
 
     2: optional string title;
 
-    3: optional list<Tag> contributors;
+    // NOT USED. contributors has been superceded by contributorIds
+    // 3: optional list<Tag> contributors;
 
     4: optional string bio;
 
@@ -910,6 +911,8 @@ struct ListItem {
 
     8: optional string bylineHtml;
 
+    9: optional list<string> contributorIds;
+
 }
 
 struct ListElementFields {