diff --git a/openapi/custom_objects_spec.json b/openapi/custom_objects_spec.json
index 2984614..2e7e27d 100644
--- a/openapi/custom_objects_spec.json
+++ b/openapi/custom_objects_spec.json
@@ -47,6 +47,13 @@
         "https"
       ],
       "parameters": [
+        {
+          "uniqueItems": true,
+          "type": "string",
+          "description": "A selector to restrict the list of returned objects by their fields. Defaults to everything.",
+          "name": "fieldSelector",
+          "in": "query"
+        },
         {
           "uniqueItems": true,
           "type": "string",
@@ -179,6 +186,13 @@
         "https"
       ],
       "parameters": [
+        {
+          "uniqueItems": true,
+          "type": "string",
+          "description": "A selector to restrict the list of returned objects by their fields. Defaults to everything.",
+          "name": "fieldSelector",
+          "in": "query"
+        },
         {
           "uniqueItems": true,
           "type": "string",