diff --git a/output/openapi/elasticsearch-openapi.json b/output/openapi/elasticsearch-openapi.json
index 9fac821dab..4073f4688c 100644
--- a/output/openapi/elasticsearch-openapi.json
+++ b/output/openapi/elasticsearch-openapi.json
@@ -68854,6 +68854,9 @@
           },
           "type": {
             "$ref": "#/components/schemas/_types.mapping:DenseVectorIndexOptionsType"
+          },
+          "rescore_vector": {
+            "$ref": "#/components/schemas/_types.mapping:DenseVectorIndexOptionsRescoreVector"
           }
         },
         "required": [
@@ -68873,6 +68876,18 @@
           "int8_hnsw"
         ]
       },
+      "_types.mapping:DenseVectorIndexOptionsRescoreVector": {
+        "type": "object",
+        "properties": {
+          "oversample": {
+            "description": "The oversampling factor to use when searching for the nearest neighbor. This is only applicable to the quantized formats: `bbq_*`, `int4_*`, and `int8_*`.\nWhen provided, `oversample * k` vectors will be gathered and then their scores will be re-computed with the original vectors.\n\nvalid values are between `1.0` and `10.0` (inclusive), or `0` exactly to disable oversampling.",
+            "type": "number"
+          }
+        },
+        "required": [
+          "oversample"
+        ]
+      },
       "_types.mapping:DenseVectorSimilarity": {
         "type": "string",
         "enum": [
diff --git a/output/openapi/elasticsearch-serverless-openapi.json b/output/openapi/elasticsearch-serverless-openapi.json
index b2e1a28282..4db168f68c 100644
--- a/output/openapi/elasticsearch-serverless-openapi.json
+++ b/output/openapi/elasticsearch-serverless-openapi.json
@@ -45468,6 +45468,9 @@
           },
           "type": {
             "$ref": "#/components/schemas/_types.mapping:DenseVectorIndexOptionsType"
+          },
+          "rescore_vector": {
+            "$ref": "#/components/schemas/_types.mapping:DenseVectorIndexOptionsRescoreVector"
           }
         },
         "required": [
@@ -45487,6 +45490,18 @@
           "int8_hnsw"
         ]
       },
+      "_types.mapping:DenseVectorIndexOptionsRescoreVector": {
+        "type": "object",
+        "properties": {
+          "oversample": {
+            "description": "The oversampling factor to use when searching for the nearest neighbor. This is only applicable to the quantized formats: `bbq_*`, `int4_*`, and `int8_*`.\nWhen provided, `oversample * k` vectors will be gathered and then their scores will be re-computed with the original vectors.\n\nvalid values are between `1.0` and `10.0` (inclusive), or `0` exactly to disable oversampling.",
+            "type": "number"
+          }
+        },
+        "required": [
+          "oversample"
+        ]
+      },
       "_types.mapping:DenseVectorSimilarity": {
         "type": "string",
         "enum": [
diff --git a/output/schema/schema-serverless.json b/output/schema/schema-serverless.json
index d356793375..4e88419416 100644
--- a/output/schema/schema-serverless.json
+++ b/output/schema/schema-serverless.json
@@ -94205,7 +94205,7 @@
         "name": "DenseVectorIndexOptionsType",
         "namespace": "_types.mapping"
       },
-      "specLocation": "_types/mapping/DenseVectorProperty.ts#L164-L209"
+      "specLocation": "_types/mapping/DenseVectorProperty.ts#L168-L213"
     },
     {
       "kind": "enum",
@@ -96803,9 +96803,43 @@
               "namespace": "_types.mapping"
             }
           }
+        },
+        {
+          "description": "The rescore vector options. This is only applicable to `bbq_hnsw`, `int4_hnsw`, `int8_hnsw`, `bbq_flat`, `int4_flat`, and `int8_flat` index types.",
+          "name": "rescore_vector",
+          "required": false,
+          "type": {
+            "kind": "instance_of",
+            "type": {
+              "name": "DenseVectorIndexOptionsRescoreVector",
+              "namespace": "_types.mapping"
+            }
+          }
+        }
+      ],
+      "specLocation": "_types/mapping/DenseVectorProperty.ts#L129-L166"
+    },
+    {
+      "kind": "interface",
+      "name": {
+        "name": "DenseVectorIndexOptionsRescoreVector",
+        "namespace": "_types.mapping"
+      },
+      "properties": [
+        {
+          "description": "The oversampling factor to use when searching for the nearest neighbor. This is only applicable to the quantized formats: `bbq_*`, `int4_*`, and `int8_*`.\nWhen provided, `oversample * k` vectors will be gathered and then their scores will be re-computed with the original vectors.\n\nvalid values are between `1.0` and `10.0` (inclusive), or `0` exactly to disable oversampling.",
+          "name": "oversample",
+          "required": true,
+          "type": {
+            "kind": "instance_of",
+            "type": {
+              "name": "float",
+              "namespace": "_types"
+            }
+          }
         }
       ],
-      "specLocation": "_types/mapping/DenseVectorProperty.ts#L129-L162"
+      "specLocation": "_types/mapping/DenseVectorProperty.ts#L215-L223"
     },
     {
       "inherits": {
diff --git a/output/schema/schema.json b/output/schema/schema.json
index 6a12fe435c..3b28ee95d0 100644
--- a/output/schema/schema.json
+++ b/output/schema/schema.json
@@ -77938,9 +77938,43 @@
               "namespace": "_types.mapping"
             }
           }
+        },
+        {
+          "description": "The rescore vector options. This is only applicable to `bbq_hnsw`, `int4_hnsw`, `int8_hnsw`, `bbq_flat`, `int4_flat`, and `int8_flat` index types.",
+          "name": "rescore_vector",
+          "required": false,
+          "type": {
+            "kind": "instance_of",
+            "type": {
+              "name": "DenseVectorIndexOptionsRescoreVector",
+              "namespace": "_types.mapping"
+            }
+          }
+        }
+      ],
+      "specLocation": "_types/mapping/DenseVectorProperty.ts#L129-L166"
+    },
+    {
+      "kind": "interface",
+      "name": {
+        "name": "DenseVectorIndexOptionsRescoreVector",
+        "namespace": "_types.mapping"
+      },
+      "properties": [
+        {
+          "description": "The oversampling factor to use when searching for the nearest neighbor. This is only applicable to the quantized formats: `bbq_*`, `int4_*`, and `int8_*`.\nWhen provided, `oversample * k` vectors will be gathered and then their scores will be re-computed with the original vectors.\n\nvalid values are between `1.0` and `10.0` (inclusive), or `0` exactly to disable oversampling.",
+          "name": "oversample",
+          "required": true,
+          "type": {
+            "kind": "instance_of",
+            "type": {
+              "name": "float",
+              "namespace": "_types"
+            }
+          }
         }
       ],
-      "specLocation": "_types/mapping/DenseVectorProperty.ts#L129-L162"
+      "specLocation": "_types/mapping/DenseVectorProperty.ts#L215-L223"
     },
     {
       "kind": "enum",
@@ -77982,7 +78016,7 @@
         "name": "DenseVectorIndexOptionsType",
         "namespace": "_types.mapping"
       },
-      "specLocation": "_types/mapping/DenseVectorProperty.ts#L164-L209"
+      "specLocation": "_types/mapping/DenseVectorProperty.ts#L168-L213"
     },
     {
       "kind": "interface",
diff --git a/output/typescript/types.ts b/output/typescript/types.ts
index e9637ca85f..8231aaa7b7 100644
--- a/output/typescript/types.ts
+++ b/output/typescript/types.ts
@@ -5493,6 +5493,11 @@ export interface MappingDenseVectorIndexOptions {
   ef_construction?: integer
   m?: integer
   type: MappingDenseVectorIndexOptionsType
+  rescore_vector?: MappingDenseVectorIndexOptionsRescoreVector
+}
+
+export interface MappingDenseVectorIndexOptionsRescoreVector {
+  oversample: float
 }
 
 export type MappingDenseVectorIndexOptionsType = 'bbq_flat' | 'bbq_hnsw' | 'flat' | 'hnsw' | 'int4_flat' | 'int4_hnsw' | 'int8_flat' | 'int8_hnsw'
diff --git a/specification/_types/mapping/DenseVectorProperty.ts b/specification/_types/mapping/DenseVectorProperty.ts
index c2f2d4646c..5d0a66c6ce 100644
--- a/specification/_types/mapping/DenseVectorProperty.ts
+++ b/specification/_types/mapping/DenseVectorProperty.ts
@@ -159,6 +159,10 @@ export class DenseVectorIndexOptions {
    * The type of kNN algorithm to use.
    */
   type: DenseVectorIndexOptionsType
+  /**
+   * The rescore vector options. This is only applicable to `bbq_hnsw`, `int4_hnsw`, `int8_hnsw`, `bbq_flat`, `int4_flat`, and `int8_flat` index types.
+   */
+  rescore_vector?: DenseVectorIndexOptionsRescoreVector
 }
 
 export enum DenseVectorIndexOptionsType {
@@ -207,3 +211,13 @@ export enum DenseVectorIndexOptionsType {
    */
   int8_hnsw
 }
+
+export class DenseVectorIndexOptionsRescoreVector {
+  /**
+   * The oversampling factor to use when searching for the nearest neighbor. This is only applicable to the quantized formats: `bbq_*`, `int4_*`, and `int8_*`.
+   * When provided, `oversample * k` vectors will be gathered and then their scores will be re-computed with the original vectors.
+   *
+   * valid values are between `1.0` and `10.0` (inclusive), or `0` exactly to disable oversampling.
+   */
+  oversample: float
+}