diff --git a/api/v1/swagger/paths/items.yaml b/api/v1/swagger/paths/items.yaml
index f906be23df..aade91c2ea 100644
--- a/api/v1/swagger/paths/items.yaml
+++ b/api/v1/swagger/paths/items.yaml
@@ -21,6 +21,7 @@
           type: string
           enum:
             - +strings
+            - biblio
         collectionFormat: csv
       - $ref: "../swagger.yaml#/parameters/match"
       - $ref: "../swagger.yaml#/parameters/order_by"