diff --git "a/API\346\226\207\346\241\243\347\233\256\345\275\225.md" "b/API\346\226\207\346\241\243\347\233\256\345\275\225.md"
index f79d5f4..1cfd1e8 100644
--- "a/API\346\226\207\346\241\243\347\233\256\345\275\225.md"
+++ "b/API\346\226\207\346\241\243\347\233\256\345\275\225.md"
@@ -1,4 +1,5 @@
-2.21.0版API文档请看[v2.21.1 API](http://repo.polyv.net/android/sdk/2.21.1/api/index.html)<br/>
+2.21.2版API文档请看[v2.21.2 API](http://repo.polyv.net/android/sdk/2.21.2/api/index.html)<br/>
+2.21.1版API文档请看[v2.21.1 API](http://repo.polyv.net/android/sdk/2.21.1/api/index.html)<br/>
 2.21.0版API文档请看[v2.21.0 API](http://repo.polyv.net/android/sdk/2.21.0/api/index.html)<br/>
 2.20.0版API文档请看[v2.20.0 API](http://repo.polyv.net/android/sdk/2.20.0/api/index.html)<br/>
 2.19.1版API文档请看[v2.19.1 API](http://repo.polyv.net/android/sdk/2.19.1/api/index.html)<br/>
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 96f0df8..6acd1d7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,22 @@
+### 2024-03-19 polyv-android-sdk-2.0.0-demo v2.21.2
+
+### 功能完善&bug修复
+* 【SDK】优化升级httpdns
+* 【SDK】完善错误日志收集
+* 【SDK】兼容旧版投屏功能使用
+* 【SDK】修复已知内存泄露问题
+
+### 修改依赖
+```groovy
+// 修改对应的sdk依赖
+implementation 'net.polyv.android:polyvPlayer:2.21.2'
+implementation 'net.polyv.android:polyvDownload:2.21.2'
+implementation 'net.polyv.android:polyvUpload:2.21.2'
+implementation 'net.polyv.android:polyvSub:2.21.2'
+```
+
+API文档请看 [v2.21.2 API](http://repo.polyv.net/android/sdk/2.21.2/api/index.html)
+
 ### 2024-02-22 polyv-android-sdk-2.0.0-demo v2.21.1
 
 ### 功能完善
diff --git a/README.md b/README.md
index 5bc7c90..f4fb39b 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 polyv-android-sdk-2.0.0-demo
 ===
 [![build passing](https://img.shields.io/badge/build-passing-brightgreen.svg)](#)
-[![GitHub release](https://img.shields.io/badge/release-v2.21.1-blue.svg)](https://github.com/easefun/polyv-android-sdk-2.0-demo/releases/tag/v2.21.1)
+[![GitHub release](https://img.shields.io/badge/release-v2.21.2-blue.svg)](https://github.com/easefun/polyv-android-sdk-2.0-demo/releases/tag/v2.21.2)
 
 <!-- START doctoc generated TOC please keep comment here to allow auto update -->
 <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
diff --git a/app/build.gradle b/app/build.gradle
index 2b789d5..2621719 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -6,8 +6,8 @@ android {
     defaultConfig {
         minSdkVersion 21
         targetSdkVersion 29
-        versionCode 221010
-        versionName "2.21.1"
+        versionCode 221020
+        versionName "2.21.2"
 
         //64K 引用限制
         multiDexEnabled true
@@ -68,10 +68,10 @@ dependencies {
     implementation 'com.android.support:design:27.1.1'
     implementation 'com.android.support:multidex:1.0.3'
 
-    implementation 'net.polyv.android:polyvPlayer:2.21.1'//SDK核心包
-    implementation 'net.polyv.android:polyvDownload:2.21.1'//SDK下载功能
-    implementation 'net.polyv.android:polyvUpload:2.21.1'//SDK上传功能
-    implementation 'net.polyv.android:polyvSub:2.21.1'//弹幕、截图功能中使用
+    implementation 'net.polyv.android:polyvPlayer:2.21.2'//SDK核心包
+    implementation 'net.polyv.android:polyvDownload:2.21.2'//SDK下载功能
+    implementation 'net.polyv.android:polyvUpload:2.21.2'//SDK上传功能
+    implementation 'net.polyv.android:polyvSub:2.21.2'//弹幕、截图功能中使用
 
     implementation 'de.hdodenhof:circleimageview:2.2.0'//圆形imageview，音频封面图使用
     implementation 'com.github.bumptech.glide:glide:4.7.1'//demo中的ppt图片加载使用