diff --git a/api/v1/swagger/paths/biblios.yaml b/api/v1/swagger/paths/biblios.yaml
index e2e68e4a99..fa98f152a5 100644
--- a/api/v1/swagger/paths/biblios.yaml
+++ b/api/v1/swagger/paths/biblios.yaml
@@ -494,6 +494,10 @@
         description: Not found
         schema:
           $ref: "../swagger.yaml#/definitions/error"
+      "409":
+        description: Conflict
+        schema:
+          $ref: "../swagger.yaml#/definitions/error"
       "500":
         description: |
           Internal server error. Possible `error_code` attribute values: