diff --git a/MPChartExample/build.gradle b/MPChartExample/build.gradle
index 3ecb934fa5..c6a7b41eed 100644
--- a/MPChartExample/build.gradle
+++ b/MPChartExample/build.gradle
@@ -3,11 +3,11 @@ plugins {
 }
 
 android {
-    compileSdkVersion 30
+    compileSdkVersion 31
     defaultConfig {
         applicationId "com.xxmassdeveloper.mpchartexample"
         minSdkVersion 16
-        targetSdkVersion 30
+        targetSdkVersion 31
         versionCode 57
         versionName '3.1.0'
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
diff --git a/MPChartExample/src/main/AndroidManifest.xml b/MPChartExample/src/main/AndroidManifest.xml
index 99334e601a..b7ba3e5f52 100644
--- a/MPChartExample/src/main/AndroidManifest.xml
+++ b/MPChartExample/src/main/AndroidManifest.xml
@@ -12,7 +12,8 @@
         android:theme="@style/AppTheme">
         <activity
             android:name="com.xxmassdeveloper.mpchartexample.notimportant.MainActivity"
-            android:label="@string/app_name" >
+            android:label="@string/app_name"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <action android:name="android.intent.action.VIEW" />
diff --git a/MPChartLib/build.gradle b/MPChartLib/build.gradle
index 1f93db9ce2..6c8d66de73 100644
--- a/MPChartLib/build.gradle
+++ b/MPChartLib/build.gradle
@@ -4,12 +4,10 @@ plugins {
 }
 
 android {
-    compileSdkVersion 30
+    compileSdkVersion 31
     defaultConfig {
         minSdkVersion 14
-        targetSdkVersion 30
-        versionCode 3
-        versionName '3.1.0'
+        targetSdkVersion 31
 
         consumerProguardFiles 'proguard-project.txt'
     }