diff --git a/.generator/schemas/v2/openapi.yaml b/.generator/schemas/v2/openapi.yaml
index d5ef9bfc5d3c..83beef00d594 100644
--- a/.generator/schemas/v2/openapi.yaml
+++ b/.generator/schemas/v2/openapi.yaml
@@ -50997,6 +50997,7 @@ components:
       - $ref: '#/components/schemas/TableResultV2DataAttributesFileMetadataCloudStorage'
       - $ref: '#/components/schemas/TableResultV2DataAttributesFileMetadataLocalFile'
     TableResultV2DataAttributesFileMetadataCloudStorage:
+      additionalProperties: false
       description: File metadata for reference tables created by cloud storage.
       properties:
         access_details:
@@ -51043,6 +51044,7 @@ components:
       - OPERATION_ERROR
       - SYSTEM_ERROR
     TableResultV2DataAttributesFileMetadataLocalFile:
+      additionalProperties: false
       description: File metadata for reference tables created by upload. Note that
         upload_id is only returned in the immediate create/replace response and is
         not available in subsequent GET requests.
diff --git a/services/reference_tables/src/v2/models/TableResultV2DataAttributesFileMetadataCloudStorage.ts b/services/reference_tables/src/v2/models/TableResultV2DataAttributesFileMetadataCloudStorage.ts
index b9639a185a21..497029456f44 100644
--- a/services/reference_tables/src/v2/models/TableResultV2DataAttributesFileMetadataCloudStorage.ts
+++ b/services/reference_tables/src/v2/models/TableResultV2DataAttributesFileMetadataCloudStorage.ts
@@ -27,12 +27,6 @@ export class TableResultV2DataAttributesFileMetadataCloudStorage {
    * Whether this table is synced automatically.
    */
   "syncEnabled"?: boolean;
-  /**
-   * A container for additional, undeclared properties.
-   * This is a holder for any undeclared properties as specified with
-   * the 'additionalProperties' keyword in the OAS document.
-   */
-  "additionalProperties"?: { [key: string]: any };
   /**
    * @ignore
    */
@@ -64,10 +58,6 @@ export class TableResultV2DataAttributesFileMetadataCloudStorage {
       baseName: "sync_enabled",
       type: "boolean",
     },
-    additionalProperties: {
-      baseName: "additionalProperties",
-      type: "{ [key: string]: any; }",
-    },
   };
 
   /**
diff --git a/services/reference_tables/src/v2/models/TableResultV2DataAttributesFileMetadataLocalFile.ts b/services/reference_tables/src/v2/models/TableResultV2DataAttributesFileMetadataLocalFile.ts
index 02b248262477..9441214486d4 100644
--- a/services/reference_tables/src/v2/models/TableResultV2DataAttributesFileMetadataLocalFile.ts
+++ b/services/reference_tables/src/v2/models/TableResultV2DataAttributesFileMetadataLocalFile.ts
@@ -12,12 +12,6 @@ export class TableResultV2DataAttributesFileMetadataLocalFile {
    * The number of rows that failed to create/update.
    */
   "errorRowCount"?: number;
-  /**
-   * A container for additional, undeclared properties.
-   * This is a holder for any undeclared properties as specified with
-   * the 'additionalProperties' keyword in the OAS document.
-   */
-  "additionalProperties"?: { [key: string]: any };
   /**
    * @ignore
    */
@@ -36,10 +30,6 @@ export class TableResultV2DataAttributesFileMetadataLocalFile {
       type: "number",
       format: "int64",
     },
-    additionalProperties: {
-      baseName: "additionalProperties",
-      type: "{ [key: string]: any; }",
-    },
   };
 
   /**