diff --git a/app/build.gradle b/app/build.gradle
index 29f9691..82bafde 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,11 +1,11 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 29
+    compileSdkVersion 34
     defaultConfig {
         applicationId "com.williamww.silkysignaturedemo"
         minSdkVersion 14
-        targetSdkVersion 29
+        targetSdkVersion 34
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -23,8 +23,8 @@ dependencies {
     androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    implementation 'androidx.appcompat:appcompat:1.1.0'
-    testImplementation 'junit:junit:4.13'
+    implementation 'androidx.appcompat:appcompat:1.6.1'
+    testImplementation 'junit:junit:4.13.2'
     implementation project(':silky-signature')
 
 }
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index e8f4aab..ab38e53 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -3,9 +3,6 @@
           xmlns:tools="http://schemas.android.com/tools"
           package="com.williamww.silkysignaturedemo">
 
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
-    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
-
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
@@ -14,7 +11,8 @@
         android:theme="@style/AppTheme"
         tools:ignore="AllowBackup,GoogleAppIndexingWarning">
         <activity
-            android:name=".MainActivity">
+            android:name=".MainActivity"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
                 <category android:name="android.intent.category.LAUNCHER"/>
diff --git a/build.gradle b/build.gradle
index deda260..f88b0dc 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,11 +3,12 @@
 buildscript {
     repositories {
         google()
-        jcenter()
         mavenCentral()
+        //noinspection JcenterRepositoryObsolete
+        jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.6.3'
+        classpath 'com.android.tools.build:gradle:4.2.2'
         classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1'
         classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.8.4'
 
@@ -19,10 +20,12 @@ buildscript {
 allprojects {
     repositories {
         google()
+        mavenCentral()
+        //noinspection JcenterRepositoryObsolete
         jcenter()
     }
 }
 
-task clean(type: Delete) {
+tasks.register('clean', Delete) {
     delete rootProject.buildDir
 }
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index d5a6654..8114af9 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.4-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-all.zip
diff --git a/silky-signature/build.gradle b/silky-signature/build.gradle
index 171ff04..898afe0 100644
--- a/silky-signature/build.gradle
+++ b/silky-signature/build.gradle
@@ -25,12 +25,10 @@ ext {
 }
 
 android {
-    compileSdkVersion 29
+    compileSdkVersion 34
     defaultConfig {
         minSdkVersion 14
-        targetSdkVersion 29
-        versionCode 1
-        versionName "1.0"
+        targetSdkVersion 34
 
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
 
@@ -48,8 +46,8 @@ dependencies {
     androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    implementation 'androidx.appcompat:appcompat:1.1.0'
-    testImplementation 'junit:junit:4.13'
+    implementation 'androidx.appcompat:appcompat:1.6.1'
+    testImplementation 'junit:junit:4.13.2'
 }
 apply from: 'https://raw.githubusercontent.com/nuuneoi/JCenter/master/installv1.gradle'
 apply from: 'https://raw.githubusercontent.com/nuuneoi/JCenter/master/bintrayv1.gradle'