diff --git a/output/schema/schema.json b/output/schema/schema.json
index 40a32ecc41..b3b5dc1b71 100644
--- a/output/schema/schema.json
+++ b/output/schema/schema.json
@@ -110992,6 +110992,24 @@
       },
       "specLocation": "eql/search/types.ts#L20-L32"
     },
+    {
+      "kind": "enum",
+      "members": [
+        {
+          "description": "Run against the first version of ESQL.",
+          "name": "2024.04.01"
+        },
+        {
+          "description": "Run against the unreleased version of the ESQL language. This will\ncontain any changes staged for release that have yet to be included\nin a version.",
+          "name": "snapshot"
+        }
+      ],
+      "name": {
+        "name": "Version",
+        "namespace": "esql._types"
+      },
+      "specLocation": "esql/_types/Version.ts#L23-L34"
+    },
     {
       "attachedBehaviors": [
         "CommonQueryParameters"
@@ -111062,6 +111080,18 @@
                 "namespace": "_builtins"
               }
             }
+          },
+          {
+            "description": "The version of the ES|QL language in which the \"query\" field uses was written.",
+            "name": "version",
+            "required": true,
+            "type": {
+              "kind": "instance_of",
+              "type": {
+                "name": "Version",
+                "namespace": "esql._types"
+              }
+            }
           }
         ]
       },
@@ -111104,7 +111134,7 @@
           }
         }
       ],
-      "specLocation": "esql/query/QueryRequest.ts#L24-L64"
+      "specLocation": "esql/query/QueryRequest.ts#L25-L69"
     },
     {
       "body": {
diff --git a/output/typescript/types.ts b/output/typescript/types.ts
index 4e131d3338..28c52bee26 100644
--- a/output/typescript/types.ts
+++ b/output/typescript/types.ts
@@ -9686,6 +9686,8 @@ export type EqlSearchResponse<TEvent = unknown> = EqlEqlSearchResponseBase<TEven
 
 export type EqlSearchResultPosition = 'tail' | 'head'
 
+export type EsqlVersion = '2024.04.01' | 'snapshot'
+
 export interface EsqlQueryRequest extends RequestBase {
   format?: string
   delimiter?: string
@@ -9695,6 +9697,7 @@ export interface EsqlQueryRequest extends RequestBase {
     locale?: string
     params?: ScalarValue[]
     query: string
+    version: EsqlVersion
   }
 }
 
diff --git a/specification/esql/_types/Version.ts b/specification/esql/_types/Version.ts
new file mode 100644
index 0000000000..ac68217212
--- /dev/null
+++ b/specification/esql/_types/Version.ts
@@ -0,0 +1,34 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import { integer } from '@_types/Numeric'
+import { Duration } from '@_types/Time'
+
+export enum Version {
+    /**
+     * Run against the first version of ESQL.
+     */
+    '2024.04.01',
+    /**
+     * Run against the unreleased version of the ESQL language. This will
+     * contain any changes staged for release that have yet to be included
+     * in a version.
+     */
+    snapshot
+}
diff --git a/specification/esql/query/QueryRequest.ts b/specification/esql/query/QueryRequest.ts
index 0dae2525cb..250b0b422a 100644
--- a/specification/esql/query/QueryRequest.ts
+++ b/specification/esql/query/QueryRequest.ts
@@ -20,6 +20,7 @@
 import { RequestBase } from '@_types/Base'
 import { QueryContainer } from '@_types/query_dsl/abstractions'
 import { ScalarValue } from '@_types/common'
+import { Version } from '@esql/_types/Version'
 
 /**
  * Executes an ES|QL request
@@ -59,6 +60,10 @@ export interface Request extends RequestBase {
     /**
      * The ES|QL query API accepts an ES|QL query string in the query parameter, runs it, and returns the results.
      */
-    query: string
+    query: string,
+    /**
+     * The version of the ES|QL language in which the "query" field uses was written.
+     */
+    version: Version
   }
 }