diff --git a/docs-source/src/en/api/public/com/highcapable/yukireflection/bean/GenericClass.md b/docs-source/src/en/api/public/com/highcapable/yukireflection/bean/GenericClass.md
index 6fe0f07..2769a86 100644
--- a/docs-source/src/en/api/public/com/highcapable/yukireflection/bean/GenericClass.md
+++ b/docs-source/src/en/api/public/com/highcapable/yukireflection/bean/GenericClass.md
@@ -27,17 +27,27 @@ class GenericClass internal constructor(private val type: ParameterizedType)
 ## argument <span class="symbol">- method</span>
 
 ```kotlin:no-line-numbers
-fun argument(index: Int): Class<*>
+fun argument(index: Int): Class<*>?
 ```
 
 ```kotlin:no-line-numbers
-inline fun <reified T> argument(index: Int): Class<T>
+inline fun <reified T> argument(index: Int): Class<T>?
 ```
 
 **Change Records**
 
 `v1.0.0` `first`
 
+`v1.0.3` `modified`
+
+方法的返回值可为 `null`
+
 **Function Illustrate**
 
-> 获得泛型参数数组下标的 `Class` 实例。
\ No newline at end of file
+> 获得泛型参数数组下标的 `Class` 实例。
+
+::: warning
+
+在运行时局部变量的泛型会被擦除，获取不到时将会返回 **null**。
+
+:::
\ No newline at end of file
diff --git a/docs-source/src/zh-cn/api/public/com/highcapable/yukireflection/bean/GenericClass.md b/docs-source/src/zh-cn/api/public/com/highcapable/yukireflection/bean/GenericClass.md
index b11faa7..eb41588 100644
--- a/docs-source/src/zh-cn/api/public/com/highcapable/yukireflection/bean/GenericClass.md
+++ b/docs-source/src/zh-cn/api/public/com/highcapable/yukireflection/bean/GenericClass.md
@@ -19,17 +19,27 @@ class GenericClass internal constructor(private val type: ParameterizedType)
 ## argument <span class="symbol">- method</span>
 
 ```kotlin:no-line-numbers
-fun argument(index: Int): Class<*>
+fun argument(index: Int): Class<*>?
 ```
 
 ```kotlin:no-line-numbers
-inline fun <reified T> argument(index: Int): Class<T>
+inline fun <reified T> argument(index: Int): Class<T>?
 ```
 
 **变更记录**
 
 `v1.0.0` `添加`
 
+`v1.0.3` `修改`
+
+方法的返回值可为 `null`
+
 **功能描述**
 
-> 获得泛型参数数组下标的 `Class` 实例。
\ No newline at end of file
+> 获得泛型参数数组下标的 `Class` 实例。
+
+::: warning
+
+在运行时局部变量的泛型会被擦除，获取不到时将会返回 **null**。
+
+:::
\ No newline at end of file