diff --git a/docs/Model/CaptionsUpdatePayload.md b/docs/Model/CaptionsUpdatePayload.md
index aea9847..61d7f11 100644
--- a/docs/Model/CaptionsUpdatePayload.md
+++ b/docs/Model/CaptionsUpdatePayload.md
@@ -4,6 +4,6 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**default** | **bool** |  | [optional]
+**default** | **bool** | Set this parameter to `true` to define a caption as the default for a video. | [optional]
 
 [[Back to Model list]](../../README.md#models) [[Back to API list]](../../README.md#endpoints) [[Back to README]](../../README.md)
diff --git a/src/Model/CaptionsUpdatePayload.php b/src/Model/CaptionsUpdatePayload.php
index f9c0a70..e04b2d3 100644
--- a/src/Model/CaptionsUpdatePayload.php
+++ b/src/Model/CaptionsUpdatePayload.php
@@ -108,7 +108,7 @@ public function getDefault()
     /**
      * Sets default
      *
-     * @param bool|null $default default
+     * @param bool|null $default Set this parameter to `true` to define a caption as the default for a video.
      *
      * @return self
      */