diff --git a/AppWidget/app/build.gradle b/AppWidget/app/build.gradle
index b70401e4e..47426043e 100644
--- a/AppWidget/app/build.gradle
+++ b/AppWidget/app/build.gradle
@@ -20,12 +20,12 @@ plugins {
 }
 
 android {
-    compileSdkPreview "android-S"
+    compileSdkVersion 31
 
     defaultConfig {
         applicationId "com.example.android.appwidget"
-        minSdkPreview "S"
-        targetSdkPreview "S"
+        minSdkVersion 31
+        targetSdkVersion 31
         versionCode 1
         versionName "1.0"
 
@@ -52,12 +52,12 @@ android {
 
 dependencies {
 
-    implementation 'androidx.core:core-ktx:1.6.0-alpha02'
-    implementation 'androidx.appcompat:appcompat:1.2.0'
-    implementation 'com.google.android.material:material:1.3.0'
+    implementation 'androidx.core:core-ktx:1.7.0-alpha01'
+    implementation 'androidx.appcompat:appcompat:1.3.1'
+    implementation 'com.google.android.material:material:1.4.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
     implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
     testImplementation 'junit:junit:4.13.2'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
 }
\ No newline at end of file
diff --git a/AppWidget/build.gradle b/AppWidget/build.gradle
index 1c6fe5a89..9af57fce0 100644
--- a/AppWidget/build.gradle
+++ b/AppWidget/build.gradle
@@ -17,15 +17,15 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 buildscript {
     ext {
-        kotlin_version = '1.4.32'
+        kotlin_version = '1.5.10'
     }
     repositories {
         google()
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.2.1'
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.4.32"
+        classpath 'com.android.tools.build:gradle:7.0.0'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.5.10"
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
diff --git a/AppWidget/gradle/wrapper/gradle-wrapper.properties b/AppWidget/gradle/wrapper/gradle-wrapper.properties
index a68494fa5..f48989223 100644
--- a/AppWidget/gradle/wrapper/gradle-wrapper.properties
+++ b/AppWidget/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 #Mon Apr 05 16:14:35 JST 2021
 distributionBase=GRADLE_USER_HOME
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.8.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.0.2-bin.zip
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME