diff --git a/README.md b/README.md
index 3e78533..dcb1613 100644
--- a/README.md
+++ b/README.md
@@ -182,7 +182,7 @@ The following is the version description. Choose one.
 dependencies {
   ...
   // androidx project
-  implementation 'com.github.xuexiangjys:XUpdate:2.1.0'
+  implementation 'com.github.xuexiangjys:XUpdate:2.1.1'
 }
 ```
 
@@ -264,6 +264,7 @@ Field name | Type | Default value | Description
 :-|:-:|:-:|:-
 mThemeColor | int | R.color.xupdate_default_theme_color | Theme colors (background colors for progress bars and buttons)
 mTopResId | int | R.drawable.xupdate_bg_app_top | Top background image resource ID
+mTopDrawableTag | String | "" | Top background image drawable tag
 mButtonTextColor | int | 0 | Button text color
 mSupportBackgroundUpdate | boolean | false | Whether background updates are supported
 mWidthRatio | float | -1（Unconstrained） | The ratio of the width of the version update prompter to the screen
@@ -390,6 +391,8 @@ By setting the update top picture, theme color, button text color, width to heig
 * promptThemeColor: Set theme color
 * promptButtonTextColor: Set the text color of the button
 * promptTopResId: Set top background image Resource ID
+* promptTopDrawable: Set top background image drawable
+* promptTopBitmap: Set top background image bitmap
 * promptWidthRatio: Set the ratio of the width of the version update prompt to the screen. The default value is -1(No constraint is required).
 * promptHeightRatio: Set the ratio of the height of the version update prompt to the screen. The default value is -1(No constraint is required).
 
diff --git a/README_ZH.md b/README_ZH.md
index ee6d3b6..3e46c6a 100644
--- a/README_ZH.md
+++ b/README_ZH.md
@@ -181,7 +181,7 @@ allprojects {
 dependencies {
   ...
   // androidx版本
-  implementation 'com.github.xuexiangjys:XUpdate:2.1.0'
+  implementation 'com.github.xuexiangjys:XUpdate:2.1.1'
 }
 ```
 
@@ -263,6 +263,7 @@ mIsShowNotification | boolean | false | 是否在通知栏上显示下载进度
 :-|:-:|:-:|:-
 mThemeColor | int | R.color.xupdate_default_theme_color | 主题色（进度条和按钮的背景色）
 mTopResId | int | R.drawable.xupdate_bg_app_top | 顶部背景图片资源id
+mTopDrawableTag | String | "" | 顶部背景图片Drawable标识
 mButtonTextColor | int | 0 | 按钮文字颜色
 mSupportBackgroundUpdate | boolean | false | 是否支持后台更新
 mWidthRatio | float | -1（无约束） | 版本更新提示器宽度占屏幕的比例
@@ -385,7 +386,9 @@ XUpdate.newBuild(getActivity())
 
 * promptThemeColor: 设置主题颜色
 * promptButtonTextColor: 设置按钮的文字颜色
-* promptTopResId: 设置顶部背景图片
+* promptTopResId: 设置顶部背景图片资源ID
+* promptTopDrawable: 设置顶部背景图片
+* promptTopBitmap: 设置顶部背景图片
 * promptWidthRatio: 设置版本更新提示器宽度占屏幕的比例，默认是-1，不做约束
 * promptHeightRatio: 设置版本更新提示器高度占屏幕的比例，默认是-1，不做约束