diff --git a/CHANGELOG.md b/CHANGELOG.md
index d05d22a1..8acfa413 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 cos-php-sdk-v5 Upgrade Guide
 ====================
+2.1.1 to 2.1.2
+----------
+- The interface supports custom parameters
+- Fix `ListBucketInventoryConfigurations`
 
 2.1.0 to 2.1.1
 ----------
diff --git a/src/Qcloud/Cos/Client.php b/src/Qcloud/Cos/Client.php
index 85a763ad..77d94bc6 100644
--- a/src/Qcloud/Cos/Client.php
+++ b/src/Qcloud/Cos/Client.php
@@ -75,7 +75,7 @@
  * @method object SelectObjectContent (array $arg)
  */
 class Client extends GuzzleClient {
-    const VERSION = '2.1.1';
+    const VERSION = '2.1.2';
 
     public $httpClient;
     
diff --git a/src/Qcloud/Cos/Service.php b/src/Qcloud/Cos/Service.php
index 484fea55..afb1a400 100644
--- a/src/Qcloud/Cos/Service.php
+++ b/src/Qcloud/Cos/Service.php
@@ -4744,6 +4744,97 @@ public static function getService() {
                         ),
                     ),
                 ),
+                'ListBucketInventoryConfigurationsOutput' => array(
+                    'type' => 'object',
+                    'additionalProperties' => true,
+                    'properties' => array(
+                        'InventoryConfiguration' => array(
+                            'type' => 'array',
+                            'location' => 'xml',
+                            'sentAs' => 'InventoryConfiguration',
+                            'items' => array(
+                                'type' => 'object',
+                                'properties' => array(
+                                    'Destination' => array(
+                                        'type' => 'object',
+                                        'location' => 'xml',
+                                        'properties' => array(
+                                            'COSBucketDestination' => array(
+                                                'type' => 'object',
+                                                'properties' => array(
+                                                    'Format' => array(
+                                                        'type' => 'string',
+                                                    ),
+                                                    'AccountId' => array(
+                                                        'type' => 'string',
+                                                    ),
+                                                    'Bucket' => array(
+                                                        'type' => 'string',
+                                                    ),
+                                                    'Prefix' => array(
+                                                        'type' => 'string',
+                                                    ),
+                                                    'Encryption' => array(
+                                                        'type' => 'object',
+                                                        'properties' => array(
+                                                            'SSE-COS' => array(
+                                                                'type' => 'string',
+                                                            )
+                                                        )
+                                                    ),
+                                                    
+                                                ),
+                                            ),
+                                        ),
+                                    ),
+                                    'Schedule' => array(
+                                        'type' => 'object',
+                                        'location' => 'xml',
+                                        'properties' => array(
+                                            'Frequency' => array(
+                                                'type' => 'string',
+                                            ),
+                                        ),
+                                    ),
+                                    'OptionalFields' => array(
+                                        'type' => 'array',
+                                        'location' => 'xml',
+                                        'properties' => array(
+                                            'Key' => array(
+                                                'type' => 'string',
+                                            ),
+                                        ),
+                                    ),
+                                    'OptionalFields' => array(
+                                        'type' => 'array',
+                                        'location' => 'xml',
+                                        'items' => array(
+                                            'name' => 'Field',
+                                            'type' => 'string',
+                                            'sentAs' => 'Field',
+                                        ),
+                                    ),
+                                    'IsEnabled' => array(
+                                        'type' => 'string',
+                                        'location' => 'xml',
+                                    ),
+                                    'Id' => array(
+                                        'type' => 'string',
+                                        'location' => 'xml',
+                                    ),
+                                    'IncludedObjectVersions' => array(
+                                        'type' => 'string',
+                                        'location' => 'xml',
+                                    ),
+                                    'RequestId' => array(
+                                        'location' => 'header',
+                                        'sentAs' => 'x-cos-request-id',
+                                    ),
+                                ),
+                            ),
+                        ),
+                    ),
+                ),
                 'HeadObjectOutput' => array(
                     'type' => 'object',
                     'additionalProperties' => true,