diff --git a/api/v1/swagger/paths/checkouts.yaml b/api/v1/swagger/paths/checkouts.yaml
index fe04186388..9f464eef67 100644
--- a/api/v1/swagger/paths/checkouts.yaml
+++ b/api/v1/swagger/paths/checkouts.yaml
@@ -30,6 +30,7 @@
           enum:
             - issuer
             - item
+            - item.biblio
             - library
             - patron
             - renewals
@@ -152,6 +153,7 @@
           enum:
             - issuer
             - item
+            - item.biblio
             - library
             - patron
             - renewals
diff --git a/api/v1/swagger/paths/patrons_checkouts.yaml b/api/v1/swagger/paths/patrons_checkouts.yaml
index 9b897a8647..719ee4bacc 100644
--- a/api/v1/swagger/paths/patrons_checkouts.yaml
+++ b/api/v1/swagger/paths/patrons_checkouts.yaml
@@ -25,6 +25,7 @@
           enum:
             - issuer
             - item
+            - item.biblio
             - library
             - patron
             - renewals