diff --git a/CHANGELOG.md b/CHANGELOG.md
index e3492cf..5e8889f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,14 +3,20 @@
 ## 2.2.0
 
 * **New Feature**: Support for custom slide indicators added.
+* **Documentation**: Updated the documentation to show all contributors.
+* **Documentation**: Updated the documentation to demonstrate the use of custom slide indicator.
+* **Fix**: `issue #28` fixed.
+* **Fix**: `issue #30` fixed.
+* **Improvement**: Performance improvements.
+* **Optimization**: Removed unnecessary codes.
 
 ## 2.1.2
 
-* **Documentation**: Updated the documentation to display the sceenshots.
+* **Documentation**: Updated the documentation to display the screenshots.
 
 ## 2.1.1
 
-* **Documentation**: Updated the documentation to display the sceenshots.
+* **Documentation**: Updated the documentation to display the screenshots.
 
 ## 2.1.0
 
diff --git a/example/android/app/build.gradle b/example/android/app/build.gradle
index 17f9133..2f4bb85 100644
--- a/example/android/app/build.gradle
+++ b/example/android/app/build.gradle
@@ -37,6 +37,11 @@ android {
         jvmTarget = '1.8'
     }
 
+    lintOptions {
+        disable 'InvalidPackage'
+        checkReleaseBuilds false
+    }
+
     sourceSets {
         main.java.srcDirs += 'src/main/kotlin'
     }
diff --git a/example/android/app/src/main/AndroidManifest.xml b/example/android/app/src/main/AndroidManifest.xml
index 919308f..3f80f47 100644
--- a/example/android/app/src/main/AndroidManifest.xml
+++ b/example/android/app/src/main/AndroidManifest.xml
@@ -1,4 +1,5 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     package="com.example.example">
 
     <uses-permission android:name="android.permission.INTERNET" />
diff --git a/example/android/build.gradle b/example/android/build.gradle
index 871ba76..b7c2752 100644
--- a/example/android/build.gradle
+++ b/example/android/build.gradle
@@ -1,31 +1,31 @@
-buildscript {
-    ext.kotlin_version = '1.6.10'
-    repositories {
-        google()
-        mavenCentral()
-    }
-
-    dependencies {
-        classpath 'com.android.tools.build:gradle:4.1.0'
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
-    }
-}
-
-allprojects {
-    repositories {
-        google()
-        mavenCentral()
-    }
-}
-
-rootProject.buildDir = '../build'
-subprojects {
-    project.buildDir = "${rootProject.buildDir}/${project.name}"
-}
-subprojects {
-    project.evaluationDependsOn(':app')
-}
-
-task clean(type: Delete) {
-    delete rootProject.buildDir
-}
+buildscript {
+    ext.kotlin_version = '1.7.10'
+    repositories {
+        google()
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:7.3.1'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+rootProject.buildDir = '../build'
+subprojects {
+    project.buildDir = "${rootProject.buildDir}/${project.name}"
+}
+subprojects {
+    project.evaluationDependsOn(':app')
+}
+
+tasks.register("clean", Delete) {
+    delete rootProject.buildDir
+}
diff --git a/example/android/gradle/wrapper/gradle-wrapper.properties b/example/android/gradle/wrapper/gradle-wrapper.properties
index 0bfb94b..3be2f61 100644
--- a/example/android/gradle/wrapper/gradle-wrapper.properties
+++ b/example/android/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-7.3.3-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.6-bin.zip
diff --git a/example/lib/main.dart b/example/lib/main.dart
index 643ecdb..1a6ba37 100644
--- a/example/lib/main.dart
+++ b/example/lib/main.dart
@@ -3,6 +3,11 @@ import 'package:flutter_carousel_widget/flutter_carousel_widget.dart';
 
 import 'app_themes.dart';
 
+void main() async {
+  WidgetsFlutterBinding.ensureInitialized();
+  runApp(const FlutterCarouselWidgetDemo());
+}
+
 class Slide {
   Slide({
     required this.title,
@@ -50,8 +55,6 @@ final List<Widget> sliders = slides
     )
     .toList();
 
-void main() => runApp(const FlutterCarouselWidgetDemo());
-
 class FlutterCarouselWidgetDemo extends StatelessWidget {
   const FlutterCarouselWidgetDemo({Key? key}) : super(key: key);
 
diff --git a/example/pubspec.yaml b/example/pubspec.yaml
index 687b0d6..bfce6e8 100644
--- a/example/pubspec.yaml
+++ b/example/pubspec.yaml
@@ -15,13 +15,13 @@ dependencies:
   flutter_carousel_widget:
     path: ../
 
-  cupertino_icons: ^1.0.5
+  cupertino_icons: ^1.0.6
 
 dev_dependencies:
   flutter_test:
     sdk: flutter
 
-  flutter_lints: ^2.0.1
+  flutter_lints: ^3.0.1
 
 flutter:
   uses-material-design: true
diff --git a/lib/src/_expandable_carousel_widget.dart b/lib/src/_expandable_carousel_widget.dart
index 6c83b88..01a4950 100644
--- a/lib/src/_expandable_carousel_widget.dart
+++ b/lib/src/_expandable_carousel_widget.dart
@@ -100,10 +100,6 @@ class ExpandableCarouselState extends State<ExpandableCarousel>
         });
       }
     });
-
-    // if (_currentPage != newPage) {
-    //   //...
-    // }
   }
 
   void _changeIndexPageDelta() {
@@ -121,15 +117,6 @@ class ExpandableCarouselState extends State<ExpandableCarousel>
         });
       }
     });
-
-    // WidgetsBinding.instance.addPostFrameCallback((_) {
-    //   if (mounted) {
-    //     setState(() {
-    //       _currentPage = _pageController!.page!.floor();
-    //       _pageDelta = _pageController!.page! - _pageController!.page!.floor();
-    //     });
-    //   }
-    // });
   }
 
   @override