diff --git a/ChangeLog.md b/ChangeLog.md
index 1296816..742c3a9 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,10 @@
+2024-09-12 Version: 2.0.3
+- Update API CreateAppInstanceGroup: update param NodePool.
+- Update API GetAppInstanceGroup: update response param.
+- Update API ListAppInstanceGroup: update response param.
+- Update API ModifyNodePoolAttribute: update param NodePoolStrategy.
+
+
 2024-08-02 Version: 2.0.2
 - Update API AuthorizeInstanceGroup: update param AuthorizeUserIds.
 - Update API AuthorizeInstanceGroup: update param UnAuthorizeUserIds.
diff --git a/composer.json b/composer.json
index 4c968a3..055690e 100644
--- a/composer.json
+++ b/composer.json
@@ -11,8 +11,8 @@
   ],
   "require": {
     "php": ">5.5",
-    "alibabacloud/tea-utils": "^0.2.20",
-    "alibabacloud/darabonba-openapi": "^0.2.12",
+    "alibabacloud/tea-utils": "^0.2.21",
+    "alibabacloud/darabonba-openapi": "^0.2.13",
     "alibabacloud/openapi-util": "^0.1.10|^0.2.1",
     "alibabacloud/endpoint-util": "^0.1.0"
   },
diff --git a/src/Models/CreateAppInstanceGroupRequest/nodePool.php b/src/Models/CreateAppInstanceGroupRequest/nodePool.php
index 822ea85..75d5047 100644
--- a/src/Models/CreateAppInstanceGroupRequest/nodePool.php
+++ b/src/Models/CreateAppInstanceGroupRequest/nodePool.php
@@ -9,6 +9,11 @@
 
 class nodePool extends Model
 {
+    /**
+     * @var int
+     */
+    public $maxIdleAppInstanceAmount;
+
     /**
      * @example 10
      *
@@ -89,6 +94,7 @@ class nodePool extends Model
      */
     public $warmUp;
     protected $_name = [
+        'maxIdleAppInstanceAmount'    => 'MaxIdleAppInstanceAmount',
         'maxScalingAmount'            => 'MaxScalingAmount',
         'nodeAmount'                  => 'NodeAmount',
         'nodeCapacity'                => 'NodeCapacity',
@@ -110,6 +116,9 @@ public function validate()
     public function toMap()
     {
         $res = [];
+        if (null !== $this->maxIdleAppInstanceAmount) {
+            $res['MaxIdleAppInstanceAmount'] = $this->maxIdleAppInstanceAmount;
+        }
         if (null !== $this->maxScalingAmount) {
             $res['MaxScalingAmount'] = $this->maxScalingAmount;
         }
@@ -164,6 +173,9 @@ public function toMap()
     public static function fromMap($map = [])
     {
         $model = new self();
+        if (isset($map['MaxIdleAppInstanceAmount'])) {
+            $model->maxIdleAppInstanceAmount = $map['MaxIdleAppInstanceAmount'];
+        }
         if (isset($map['MaxScalingAmount'])) {
             $model->maxScalingAmount = $map['MaxScalingAmount'];
         }
diff --git a/src/Models/GetAppInstanceGroupResponseBody/appInstanceGroupModels/nodePool.php b/src/Models/GetAppInstanceGroupResponseBody/appInstanceGroupModels/nodePool.php
index 1a4427e..2d27345 100644
--- a/src/Models/GetAppInstanceGroupResponseBody/appInstanceGroupModels/nodePool.php
+++ b/src/Models/GetAppInstanceGroupResponseBody/appInstanceGroupModels/nodePool.php
@@ -16,6 +16,11 @@ class nodePool extends Model
      */
     public $amount;
 
+    /**
+     * @var int
+     */
+    public $maxIdleAppInstanceAmount;
+
     /**
      * @example 8
      *
@@ -132,6 +137,7 @@ class nodePool extends Model
     public $warmUp;
     protected $_name = [
         'amount'                      => 'Amount',
+        'maxIdleAppInstanceAmount'    => 'MaxIdleAppInstanceAmount',
         'maxScalingAmount'            => 'MaxScalingAmount',
         'nodeAmount'                  => 'NodeAmount',
         'nodeCapacity'                => 'NodeCapacity',
@@ -161,6 +167,9 @@ public function toMap()
         if (null !== $this->amount) {
             $res['Amount'] = $this->amount;
         }
+        if (null !== $this->maxIdleAppInstanceAmount) {
+            $res['MaxIdleAppInstanceAmount'] = $this->maxIdleAppInstanceAmount;
+        }
         if (null !== $this->maxScalingAmount) {
             $res['MaxScalingAmount'] = $this->maxScalingAmount;
         }
@@ -233,6 +242,9 @@ public static function fromMap($map = [])
         if (isset($map['Amount'])) {
             $model->amount = $map['Amount'];
         }
+        if (isset($map['MaxIdleAppInstanceAmount'])) {
+            $model->maxIdleAppInstanceAmount = $map['MaxIdleAppInstanceAmount'];
+        }
         if (isset($map['MaxScalingAmount'])) {
             $model->maxScalingAmount = $map['MaxScalingAmount'];
         }
diff --git a/src/Models/ListAppInstanceGroupResponseBody/appInstanceGroupModels/nodePool.php b/src/Models/ListAppInstanceGroupResponseBody/appInstanceGroupModels/nodePool.php
index d550f0d..1081230 100644
--- a/src/Models/ListAppInstanceGroupResponseBody/appInstanceGroupModels/nodePool.php
+++ b/src/Models/ListAppInstanceGroupResponseBody/appInstanceGroupModels/nodePool.php
@@ -16,6 +16,11 @@ class nodePool extends Model
      */
     public $amount;
 
+    /**
+     * @var int
+     */
+    public $maxIdleAppInstanceAmount;
+
     /**
      * @example 8
      *
@@ -132,6 +137,7 @@ class nodePool extends Model
     public $warmUp;
     protected $_name = [
         'amount'                      => 'Amount',
+        'maxIdleAppInstanceAmount'    => 'MaxIdleAppInstanceAmount',
         'maxScalingAmount'            => 'MaxScalingAmount',
         'nodeAmount'                  => 'NodeAmount',
         'nodeCapacity'                => 'NodeCapacity',
@@ -161,6 +167,9 @@ public function toMap()
         if (null !== $this->amount) {
             $res['Amount'] = $this->amount;
         }
+        if (null !== $this->maxIdleAppInstanceAmount) {
+            $res['MaxIdleAppInstanceAmount'] = $this->maxIdleAppInstanceAmount;
+        }
         if (null !== $this->maxScalingAmount) {
             $res['MaxScalingAmount'] = $this->maxScalingAmount;
         }
@@ -233,6 +242,9 @@ public static function fromMap($map = [])
         if (isset($map['Amount'])) {
             $model->amount = $map['Amount'];
         }
+        if (isset($map['MaxIdleAppInstanceAmount'])) {
+            $model->maxIdleAppInstanceAmount = $map['MaxIdleAppInstanceAmount'];
+        }
         if (isset($map['MaxScalingAmount'])) {
             $model->maxScalingAmount = $map['MaxScalingAmount'];
         }
diff --git a/src/Models/ModifyNodePoolAttributeRequest/nodePoolStrategy.php b/src/Models/ModifyNodePoolAttributeRequest/nodePoolStrategy.php
index edd347f..9f9b99a 100644
--- a/src/Models/ModifyNodePoolAttributeRequest/nodePoolStrategy.php
+++ b/src/Models/ModifyNodePoolAttributeRequest/nodePoolStrategy.php
@@ -9,6 +9,11 @@
 
 class nodePoolStrategy extends Model
 {
+    /**
+     * @var int
+     */
+    public $maxIdleAppInstanceAmount;
+
     /**
      * @example 10
      *
@@ -86,6 +91,7 @@ class nodePoolStrategy extends Model
      */
     public $warmUp;
     protected $_name = [
+        'maxIdleAppInstanceAmount'    => 'MaxIdleAppInstanceAmount',
         'maxScalingAmount'            => 'MaxScalingAmount',
         'nodeAmount'                  => 'NodeAmount',
         'recurrenceSchedules'         => 'RecurrenceSchedules',
@@ -105,6 +111,9 @@ public function validate()
     public function toMap()
     {
         $res = [];
+        if (null !== $this->maxIdleAppInstanceAmount) {
+            $res['MaxIdleAppInstanceAmount'] = $this->maxIdleAppInstanceAmount;
+        }
         if (null !== $this->maxScalingAmount) {
             $res['MaxScalingAmount'] = $this->maxScalingAmount;
         }
@@ -153,6 +162,9 @@ public function toMap()
     public static function fromMap($map = [])
     {
         $model = new self();
+        if (isset($map['MaxIdleAppInstanceAmount'])) {
+            $model->maxIdleAppInstanceAmount = $map['MaxIdleAppInstanceAmount'];
+        }
         if (isset($map['MaxScalingAmount'])) {
             $model->maxScalingAmount = $map['MaxScalingAmount'];
         }