diff --git a/schemas/v3.1/schema.json b/schemas/v3.1/schema.json
index 9f1524f4dc..51ab64b936 100644
--- a/schemas/v3.1/schema.json
+++ b/schemas/v3.1/schema.json
@@ -813,6 +813,7 @@
           "$ref": "#/$defs/response-or-reference"
         }
       },
+      "minProperties": 1,
       "$ref": "#/$defs/specification-extensions",
       "unevaluatedProperties": false
     },
diff --git a/schemas/v3.1/schema.yaml b/schemas/v3.1/schema.yaml
index bf44567463..55b86c7db9 100644
--- a/schemas/v3.1/schema.yaml
+++ b/schemas/v3.1/schema.yaml
@@ -551,6 +551,7 @@ $defs:
     patternProperties:
       '^[1-5](?:[0-9]{2}|XX)$':
         $ref: '#/$defs/response-or-reference'
+    minProperties: 1
     $ref: '#/$defs/specification-extensions'
     unevaluatedProperties: false