diff --git a/app/build.gradle b/app/build.gradle
index 551681e..32af492 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -32,6 +32,8 @@ android {
 
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
+    implementation 'androidx.appcompat:appcompat:1.1.0-alpha02'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'androidx.test:runner:1.1.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
diff --git a/app/src/main/java/com/simorgh/sweetalertdialogpersian/SampleProgressViewActivity.java b/app/src/main/java/com/simorgh/sweetalertdialogpersian/SampleProgressViewActivity.java
index 401a644..243b507 100644
--- a/app/src/main/java/com/simorgh/sweetalertdialogpersian/SampleProgressViewActivity.java
+++ b/app/src/main/java/com/simorgh/sweetalertdialogpersian/SampleProgressViewActivity.java
@@ -16,6 +16,7 @@
 
 import androidx.appcompat.app.AppCompatActivity;
 
+
 public class SampleProgressViewActivity extends AppCompatActivity {
 
     private ProgressWheel progressWheel;
diff --git a/sweetalertdialog/build.gradle b/sweetalertdialog/build.gradle
index 8fa1cf1..afa56c6 100644
--- a/sweetalertdialog/build.gradle
+++ b/sweetalertdialog/build.gradle
@@ -29,7 +29,7 @@ android {
 
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
-    implementation 'androidx.appcompat:appcompat:1.1.0-alpha01'
+    implementation 'androidx.appcompat:appcompat:1.1.0-alpha02'
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'androidx.test:runner:1.1.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'