diff --git a/CHANGELOG.md b/CHANGELOG.md
index 800a067..030347a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+# 5.5.3+2
+- Fix #398
+
+# 5.5.3+1
+- Fix compatibility with flutter sdk 2.x
+
 # 5.5.3
 - Bug Fix: Some widgets disapear because of parent rebuild.
 - Bug Fix: issue #362. Null check operator used on a null value when using ScreenUtil.init().
diff --git a/README_CN.md b/README_CN.md
index dbdfd3c..b5b1af8 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -42,11 +42,15 @@ import 'package:flutter_screenutil/flutter_screenutil.dart';
 |属性|类型|默认值|描述|
 |:---|:---|:---|:---|
 |designSize|Size|Size(360, 690)|设计稿中设备的尺寸(单位随意,建议dp,但在使用过程中必须保持一致)|
+| deviceSize      | Size         | null          | 物理设备的大小                                             |
 |builder|Widget Function()|Container()|一般返回一个MaterialApp类型的Function()|
 |orientation|Orientation|portrait|屏幕方向|
 |splitScreenMode|bool|false|支持分屏尺寸|
 |minTextAdapt|bool|false|是否根据宽度/高度中的最小值适配文字|
 |context|BuildContext|null|传入context会更灵敏的根据屏幕变化而改变|
+| child           | Widget       | null          | builder的一部分，其依赖项属性不使用该库    |
+| rebuildFactor   | Function     | *default*     | 返回屏幕指标更改时是否重建。          |
+
 
 ### 初始化并设置适配尺寸及字体大小是否根据系统的“字体大小”辅助选项来进行缩放
 在使用之前请设置好设计稿的宽度和高度，传入设计稿的宽度和高度(单位随意,但在使用过程中必须保持一致)
diff --git a/lib/src/screen_util.dart b/lib/src/screen_util.dart
index c9c2775..2f7b93b 100644
--- a/lib/src/screen_util.dart
+++ b/lib/src/screen_util.dart
@@ -115,6 +115,7 @@ class ScreenUtil {
             : Orientation.portrait);
 
     _instance
+      .._context = context
       .._uiSize = designSize
       .._splitScreenMode = splitScreenMode
       .._minTextAdapt = minTextAdapt
diff --git a/pubspec.yaml b/pubspec.yaml
index 31338d1..d6ba915 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: flutter_screenutil
 description: A flutter plugin for adapting screen and font size.Guaranteed to look good on different models
-version: 5.5.3
+version: 5.5.3+2
 homepage: https://github.com/OpenFlutter/flutter_screenutil
 
 environment: