diff --git a/schemars/src/gen.rs b/schemars/src/gen.rs
index d19f80b9..8336eccc 100644
--- a/schemars/src/gen.rs
+++ b/schemars/src/gen.rs
@@ -88,7 +88,7 @@ impl SchemaSettings {
             option_add_null_type: false,
             definitions_path: "#/components/schemas/".to_owned(),
             meta_schema: Some(
-                "https://spec.openapis.org/oas/3.0/schema/2019-04-02#/definitions/Schema"
+                "https://spec.openapis.org/oas/3.0/schema/2021-09-28#/definitions/Schema"
                     .to_owned(),
             ),
             visitors: vec![
diff --git a/schemars/tests/expected/from_value_openapi3.json b/schemars/tests/expected/from_value_openapi3.json
index 132a59a2..858d2862 100644
--- a/schemars/tests/expected/from_value_openapi3.json
+++ b/schemars/tests/expected/from_value_openapi3.json
@@ -1,32 +1,34 @@
 {
-  "$schema": "https://spec.openapis.org/oas/3.0/schema/2019-04-02#/definitions/Schema",
+  "$schema": "https://spec.openapis.org/oas/3.0/schema/2021-09-28#/definitions/Schema",
   "title": "MyStruct",
   "type": "object",
-  "properties": {
-    "myInt": {
-      "type": "integer"
+  "example": {
+    "myBool": true,
+    "myInnerStruct": {
+      "my_empty_map": {},
+      "my_empty_vec": [],
+      "my_map": {
+        "": 0.0
+      },
+      "my_tuple": [
+        "💩",
+        42
+      ],
+      "my_vec": [
+        "hello",
+        "world"
+      ]
     },
+    "myInt": 123,
+    "myNullableEnum": null
+  },
+  "properties": {
     "myBool": {
       "type": "boolean"
     },
-    "myNullableEnum": {
-      "nullable": true
-    },
     "myInnerStruct": {
       "type": "object",
       "properties": {
-        "my_map": {
-          "type": "object",
-          "additionalProperties": {
-            "type": "number"
-          }
-        },
-        "my_vec": {
-          "type": "array",
-          "items": {
-            "type": "string"
-          }
-        },
         "my_empty_map": {
           "type": "object",
           "additionalProperties": true
@@ -35,6 +37,12 @@
           "type": "array",
           "items": {}
         },
+        "my_map": {
+          "type": "object",
+          "additionalProperties": {
+            "type": "number"
+          }
+        },
         "my_tuple": {
           "type": "array",
           "items": [
@@ -49,28 +57,20 @@
           ],
           "maxItems": 2,
           "minItems": 2
+        },
+        "my_vec": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
         }
       }
-    }
-  },
-  "example": {
-    "myBool": true,
-    "myInnerStruct": {
-      "my_empty_map": {},
-      "my_empty_vec": [],
-      "my_map": {
-        "": 0.0
-      },
-      "my_tuple": [
-        "💩",
-        42
-      ],
-      "my_vec": [
-        "hello",
-        "world"
-      ]
     },
-    "myInt": 123,
-    "myNullableEnum": null
+    "myInt": {
+      "type": "integer"
+    },
+    "myNullableEnum": {
+      "nullable": true
+    }
   }
 }
\ No newline at end of file
diff --git a/schemars/tests/expected/schema_settings-openapi3.json b/schemars/tests/expected/schema_settings-openapi3.json
index 17fe8051..15b752d5 100644
--- a/schemars/tests/expected/schema_settings-openapi3.json
+++ b/schemars/tests/expected/schema_settings-openapi3.json
@@ -1,32 +1,32 @@
 {
-  "$schema": "https://spec.openapis.org/oas/3.0/schema/2019-04-02#/definitions/Schema",
+  "$schema": "https://spec.openapis.org/oas/3.0/schema/2021-09-28#/definitions/Schema",
   "title": "Outer",
   "type": "object",
-  "required": [
-    "int",
-    "value",
-    "values"
-  ],
   "properties": {
+    "inner": {
+      "allOf": [
+        {
+          "$ref": "#/components/schemas/Inner"
+        }
+      ],
+      "nullable": true
+    },
     "int": {
       "type": "integer",
       "format": "int32",
       "example": 8
     },
+    "value": {},
     "values": {
       "type": "object",
       "additionalProperties": true
-    },
-    "value": {},
-    "inner": {
-      "allOf": [
-        {
-          "$ref": "#/components/schemas/Inner"
-        }
-      ],
-      "nullable": true
     }
   },
+  "required": [
+    "int",
+    "value",
+    "values"
+  ],
   "definitions": {
     "Inner": {
       "oneOf": [
@@ -46,13 +46,13 @@
         },
         {
           "type": "object",
-          "required": [
-            "ValueNewType"
-          ],
+          "additionalProperties": false,
           "properties": {
             "ValueNewType": {}
           },
-          "additionalProperties": false
+          "required": [
+            "ValueNewType"
+          ]
         }
       ]
     }