diff --git a/api/v1/swagger/definitions/patron.json b/api/v1/swagger/definitions/patron.json
index 60488f5a4b9..2b4c9ceea25 100644
--- a/api/v1/swagger/definitions/patron.json
+++ b/api/v1/swagger/definitions/patron.json
@@ -281,6 +281,13 @@
       "type": "boolean",
       "readOnly": true,
       "description": "If the patron has been anonymized"
+    },
+    "extended_attributes": {
+      "type": "array",
+      "description": "patron's extended attributes",
+      "items": {
+        "$ref": "extended_attribute.json"
+      }
     }
   },
   "additionalProperties": false,
diff --git a/api/v1/swagger/paths/patrons.json b/api/v1/swagger/paths/patrons.json
index 3e4e7739a10..23d143b9180 100644
--- a/api/v1/swagger/paths/patrons.json
+++ b/api/v1/swagger/paths/patrons.json
@@ -451,7 +451,10 @@
         "permissions": {
           "borrowers": "1"
         }
-      }
+      },
+      "x-koha-embed": [
+        "extended_attributes"
+      ]
     },
     "post": {
       "x-mojo-to": "Patrons#add",
@@ -580,7 +583,10 @@
         "permissions": {
           "borrowers": "edit_borrowers"
         }
-      }
+      },
+      "x-koha-embed": [
+        "extended_attributes"
+      ]
     },
     "put": {
       "x-mojo-to": "Patrons#update",