diff --git a/schemas/v3.1/schema-base.json b/schemas/v3.1/schema-base.json
index 658e943cc5..b8631e628f 100644
--- a/schemas/v3.1/schema-base.json
+++ b/schemas/v3.1/schema-base.json
@@ -1,7 +1,7 @@
 {
-  "$id": "https://spec.openapis.org/oas/3.1/schema-base/2021-04-15",
+  "$id": "https://spec.openapis.org/oas/3.1/schema-base/2021-05-20",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
-  "$ref": "https://spec.openapis.org/oas/3.1/schema/2021-04-15",
+  "$ref": "https://spec.openapis.org/oas/3.1/schema/2021-05-20",
   "properties": {
     "jsonSchemaDialect": {
       "$ref": "#/$defs/dialect"
diff --git a/schemas/v3.1/schema-base.yaml b/schemas/v3.1/schema-base.yaml
index 515ed08989..860f62b106 100644
--- a/schemas/v3.1/schema-base.yaml
+++ b/schemas/v3.1/schema-base.yaml
@@ -1,7 +1,7 @@
-$id: 'https://spec.openapis.org/oas/3.1/schema-base/2021-04-15'
+$id: 'https://spec.openapis.org/oas/3.1/schema-base/2021-05-20'
 $schema: 'https://json-schema.org/draft/2020-12/schema'
 
-$ref: 'https://spec.openapis.org/oas/3.1/schema/2021-04-15'
+$ref: 'https://spec.openapis.org/oas/3.1/schema/2021-05-20'
 properties:
   jsonSchemaDialect:
     $ref: '#/$defs/dialect'
diff --git a/schemas/v3.1/schema.json b/schemas/v3.1/schema.json
index a798834247..44fdbb92b8 100644
--- a/schemas/v3.1/schema.json
+++ b/schemas/v3.1/schema.json
@@ -1,5 +1,5 @@
 {
-  "$id": "https://spec.openapis.org/oas/3.1/schema/2021-04-15",
+  "$id": "https://spec.openapis.org/oas/3.1/schema/2021-05-20",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "type": "object",
   "properties": {
@@ -11,7 +11,8 @@
       "$ref": "#/$defs/info"
     },
     "jsonSchemaDialect": {
-      "$ref": "#/$defs/uri",
+      "type": "string",
+      "format": "uri",
       "default": "https://spec.openapis.org/oas/3.1/dialect/base"
     },
     "servers": {
@@ -130,7 +131,8 @@
           "type": "string"
         },
         "url": {
-          "$ref": "#/$defs/uri"
+          "type": "string",
+          "format": "uri"
         }
       },
       "required": [
@@ -155,7 +157,8 @@
       "type": "object",
       "properties": {
         "url": {
-          "$ref": "#/$defs/uri"
+          "type": "string",
+          "format": "uri-reference"
         },
         "description": {
           "type": "string"
@@ -390,7 +393,8 @@
           "type": "string"
         },
         "url": {
-          "$ref": "#/$defs/uri"
+          "type": "string",
+          "format": "uri"
         }
       },
       "required": [
@@ -849,7 +853,8 @@
         },
         "value": true,
         "externalValue": {
-          "$ref": "#/$defs/uri"
+          "type": "string",
+          "format": "uri"
         }
       },
       "$ref": "#/$defs/specification-extensions",
@@ -872,7 +877,8 @@
       "type": "object",
       "properties": {
         "operationRef": {
-          "$ref": "#/$defs/uri"
+          "type": "string",
+          "format": "uri-reference"
         },
         "operationId": true,
         "parameters": {
@@ -1003,7 +1009,8 @@
       "type": "object",
       "properties": {
         "$ref": {
-          "$ref": "#/$defs/uri"
+          "type": "string",
+          "format": "uri-reference"
         },
         "summary": {
           "type": "string"
@@ -1176,7 +1183,8 @@
           "then": {
             "properties": {
               "openIdConnectUrl": {
-                "$ref": "#/$defs/uri"
+                "type": "string",
+                "format": "uri"
               }
             },
             "required": [
@@ -1329,10 +1337,6 @@
         }
       }
     },
-    "uri": {
-      "type": "string",
-      "format": "uri"
-    },
     "map-of-strings": {
       "type": "object",
       "additionalProperties": {
diff --git a/schemas/v3.1/schema.yaml b/schemas/v3.1/schema.yaml
index 86cb44efca..39b90f34de 100644
--- a/schemas/v3.1/schema.yaml
+++ b/schemas/v3.1/schema.yaml
@@ -1,4 +1,4 @@
-$id: 'https://spec.openapis.org/oas/3.1/schema/2021-04-15'
+$id: 'https://spec.openapis.org/oas/3.1/schema/2021-05-20'
 $schema: 'https://json-schema.org/draft/2020-12/schema'
 
 type: object
@@ -9,7 +9,8 @@ properties:
   info:
     $ref: '#/$defs/info'
   jsonSchemaDialect:
-    $ref: '#/$defs/uri'
+    type: string
+    format: uri
     default: 'https://spec.openapis.org/oas/3.1/dialect/base'
   servers:
     type: array
@@ -90,7 +91,8 @@ $defs:
       identifier:
         type: string
       url:
-        $ref: '#/$defs/uri'
+        type: string
+        format: uri
     required:
       - name
     oneOf:
@@ -105,7 +107,8 @@ $defs:
     type: object
     properties:
       url:
-        $ref: '#/$defs/uri'
+        type: string
+        format: uri-reference
       description:
         type: string
       variables:
@@ -270,7 +273,8 @@ $defs:
       description:
         type: string
       url:
-        $ref: '#/$defs/uri'
+        type: string
+        format: uri
     required:
       - url
     $ref: '#/$defs/specification-extensions'
@@ -574,7 +578,8 @@ $defs:
         type: string
       value: true
       externalValue:
-        $ref: '#/$defs/uri'
+        type: string
+        format: uri
     $ref: '#/$defs/specification-extensions'
     unevaluatedProperties: false
 
@@ -591,7 +596,8 @@ $defs:
     type: object
     properties:
       operationRef:
-        $ref: '#/$defs/uri'
+        type: string
+        format: uri-reference
       operationId: true
       parameters:
         $ref: '#/$defs/map-of-strings'
@@ -681,7 +687,8 @@ $defs:
     type: object
     properties:
       $ref:
-        $ref: '#/$defs/uri'
+        type: string
+        format: uri-reference
       summary:
         type: string
       description:
@@ -793,7 +800,8 @@ $defs:
         then:
           properties:
             openIdConnectUrl:
-              $ref: '#/$defs/uri'
+              type: string
+              format: uri
           required:
             - openIdConnectUrl
 
@@ -903,10 +911,6 @@ $defs:
         additionalProperties:
           $ref: '#/$defs/example-or-reference'
 
-  uri:
-    type: string
-    format: uri
-
   map-of-strings:
     type: object
     additionalProperties:
diff --git a/tests/v3.1/test.js b/tests/v3.1/test.js
index 43f7e80588..5e7bf55692 100644
--- a/tests/v3.1/test.js
+++ b/tests/v3.1/test.js
@@ -14,7 +14,7 @@ before(async () => {
   JsonSchema.add(dialect);
   JsonSchema.add(vocabulary);
   JsonSchema.add(yaml.parse(fs.readFileSync(`${__dirname}/../../schemas/v3.1/schema.yaml`, "utf8"), { prettyErrors: true }));
-  metaSchema = await JsonSchema.get("https://spec.openapis.org/oas/3.1/schema/2021-03-02");
+  metaSchema = await JsonSchema.get("https://spec.openapis.org/oas/3.1/schema/2021-05-20");
 });
 
 describe("Pass", () => {