diff --git a/docs/endpointFunctionList.md b/docs/endpointFunctionList.md
index 55a1b70..7406cfd 100644
--- a/docs/endpointFunctionList.md
+++ b/docs/endpointFunctionList.md
@@ -258,6 +258,7 @@ This table includes all endpoints from the official Exchange API docs and corres
 | `cancelAllOpenOptionsOrders()` | :closed_lock_with_key:  | DELETE | `/options/orders` |
 | `getOptionsOrder()` | :closed_lock_with_key:  | GET | `/options/orders/{order_id}` |
 | `cancelOptionsOrder()` | :closed_lock_with_key:  | DELETE | `/options/orders/{order_id}` |
+| `submitOptionsCountdownCancel()` | :closed_lock_with_key:  | POST | `/options/countdown_cancel_all` |
 | `getOptionsPersonalHistory()` | :closed_lock_with_key:  | GET | `/options/my_trades` |
 | `setOptionsMMPSettings()` | :closed_lock_with_key:  | POST | `/options/mmp` |
 | `getOptionsMMPSettings()` | :closed_lock_with_key:  | GET | `/options/mmp` |
diff --git a/package-lock.json b/package-lock.json
index 7a7ece6..ba57cf5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "gateio-api",
-  "version": "1.0.16",
+  "version": "1.0.17",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "gateio-api",
-      "version": "1.0.16",
+      "version": "1.0.17",
       "license": "MIT",
       "dependencies": {
         "axios": "^1.6.6",
diff --git a/package.json b/package.json
index 81009a3..a6de7a4 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "gateio-api",
-  "version": "1.0.16",
+  "version": "1.0.17",
   "description": "Complete & robust Node.js SDK for Gate.io's REST APIs, WebSockets & WebSocket APIs, with TypeScript declarations.",
   "scripts": {
     "clean": "rm -rf dist/*",
diff --git a/src/RestClient.ts b/src/RestClient.ts
index f615c8b..0acca38 100644
--- a/src/RestClient.ts
+++ b/src/RestClient.ts
@@ -45,6 +45,7 @@ import {
 import {
   BatchAmendOrderReq,
   DeleteAllFuturesOrdersReq,
+  GetFundingRatesReq,
   GetFuturesAccountBookReq,
   GetFuturesAutoOrdersReq,
   GetFuturesCandlesReq,
@@ -1949,11 +1950,7 @@ export class RestClient extends BaseRestClient {
    *   r: string;
    * }[]>
    */
-  getFundingRates(params: {
-    settle: 'btc' | 'usdt' | 'usd';
-    contract: string;
-    limit?: number;
-  }): Promise<
+  getFundingRates(params: GetFundingRatesReq): Promise<
     {
       t: number;
       r: string;
@@ -3267,6 +3264,29 @@ export class RestClient extends BaseRestClient {
     return this.deletePrivate(`/options/orders/${params.order_id}`);
   }
 
+  /**
+   * Countdown cancel orders for options
+   *
+   * Option order heartbeat detection. When the timeout set by the user is reached,
+   * if there is no cancel or new countdown set, related pending orders will be
+   * automatically cancelled. This endpoint can be called repeatedly to set a new
+   * countdown or cancel the countdown.
+   *
+   * @param params Parameters for setting countdown cancel orders
+   * @returns Promise<{
+   *   triggerTime: number;
+   * }>
+   */
+  submitOptionsCountdownCancel(params: {
+    timeout: number;
+    contract?: string;
+    underlying?: string;
+  }): Promise<{
+    triggerTime: number;
+  }> {
+    return this.postPrivate('/options/countdown_cancel_all', { body: params });
+  }
+
   /**
    * List personal trading history
    *
diff --git a/src/types/request/futures.ts b/src/types/request/futures.ts
index 6dab4e3..9e762ac 100644
--- a/src/types/request/futures.ts
+++ b/src/types/request/futures.ts
@@ -38,6 +38,14 @@ export interface GetFuturesStatsReq {
   limit?: number;
 }
 
+export interface GetFundingRatesReq {
+  settle: 'btc' | 'usdt' | 'usd';
+  contract: string;
+  limit?: number;
+  from?: number;
+  to?: number;
+}
+
 export interface GetLiquidationHistoryReq {
   settle: 'btc' | 'usdt' | 'usd';
   contract?: string;
diff --git a/src/types/response/futures.ts b/src/types/response/futures.ts
index 80196ea..40bd0d5 100644
--- a/src/types/response/futures.ts
+++ b/src/types/response/futures.ts
@@ -61,6 +61,8 @@ export interface FuturesTicker {
   basis_value: string;
   lowest_ask: string;
   highest_bid: string;
+  lowest_size: string;
+  highest_size: string;
 }
 
 export interface FuturesStats {
diff --git a/src/types/response/wallet.ts b/src/types/response/wallet.ts
index 02d550a..1f50233 100644
--- a/src/types/response/wallet.ts
+++ b/src/types/response/wallet.ts
@@ -203,4 +203,5 @@ export interface PushOrder {
     | 'REFUSED'
     | 'RECEIVING'
     | 'RECEIVED';
+  message: string;
 }