diff --git a/output/schema/schema.json b/output/schema/schema.json
index f58f37f0af..8ce5ce8613 100644
--- a/output/schema/schema.json
+++ b/output/schema/schema.json
@@ -5150,7 +5150,9 @@
         "name": "Response",
         "namespace": "esql.list_queries"
       },
-      "responseMediaType": [],
+      "responseMediaType": [
+        "application/json"
+      ],
       "urls": [
         {
           "methods": [
diff --git a/specification/_json_spec/esql.list_queries.json b/specification/_json_spec/esql.list_queries.json
index ea8d8447e1..72c0cbc102 100644
--- a/specification/_json_spec/esql.list_queries.json
+++ b/specification/_json_spec/esql.list_queries.json
@@ -7,7 +7,7 @@
     "stability": "experimental",
     "visibility": "public",
     "headers": {
-      "accept": [],
+      "accept": ["application/json"],
       "content_type": ["application/json"]
     },
     "url": {