diff --git a/app/build.gradle b/app/build.gradle
index 02a9e5c..0cd279e 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 28
@@ -17,8 +16,6 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
-    productFlavors {
-    }
     packagingOptions {
         exclude 'META-INF/ASL2.0'
         exclude 'META-INF/LICENSE'
@@ -27,12 +24,15 @@ android {
         exclude 'META-INF/LICENSE.txt'
         exclude 'META-INF/MANIFEST.MF'
     }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
 }
 
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
     implementation 'com.android.support:appcompat-v7:28.0.0'
     implementation project(':library')
-    implementation 'com.squareup.okhttp3:okhttp:3.4.1'
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation 'com.squareup.okhttp3:okhttp:4.10.0'
 }
diff --git a/build.gradle b/build.gradle
index 853ac62..cf07f23 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,23 +1,17 @@
-// Top-level build file where you can add configuration options common to all sub-projects/modules.
-
 buildscript {
-    ext.kotlin_version = '1.3.50'
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:4.0.0'
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
-
-        // NOTE: Do not place your application dependencies here; they belong
-        // in the individual module build.gradle files
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.6.20"
     }
 }
 
 allprojects {
     repositories {
-        jcenter()
         google()
+        mavenCentral()
     }
 }
\ No newline at end of file
diff --git a/library/build.gradle b/library/build.gradle
index 5e1afd1..6c6415e 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.library'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 
 android {
@@ -8,8 +7,6 @@ android {
     defaultConfig {
         minSdkVersion 14
         targetSdkVersion 28
-        versionCode 1
-        versionName "1.0"
     }
     compileOptions {
         kotlinOptions.freeCompilerArgs += ['-module-name', "com.opensource.svgaplayer"]
@@ -20,7 +17,9 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
-    productFlavors {
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
     }
     packagingOptions {
         exclude 'META-INF/ASL2.0'
@@ -34,10 +33,5 @@ android {
 
 
 dependencies {
-    implementation fileTree(include: ['*.jar'], dir: 'libs')
-    implementation 'com.squareup.wire:wire-runtime:2.3.0-RC1'
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-}
-repositories {
-    mavenCentral()
+    implementation 'com.squareup.wire:wire-runtime:4.4.1'
 }
diff --git a/readme.md b/readme.md
index 5543ac9..7c2d21d 100644
--- a/readme.md
+++ b/readme.md
@@ -1,3 +1,8 @@
+# Archived
+本仓库已经停止维护，你仍然继续阅读源码及创建分叉，但本仓库不会继续更新，也不会回答任何 issue。
+
+This repo has stopped maintenance, you can still continue to read the source code and create forks, but this repo will not continue to be updated, nor will it answer any issues.
+
 # SVGAPlayer
 
 [简体中文](./readme.zh.md)