diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index c443b1e..aef77e9 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -15,7 +15,6 @@
             <option value="$PROJECT_DIR$/expandable-recyclerview" />
           </set>
         </option>
-        <option name="resolveModulePerSourceSet" value="false" />
       </GradleProjectSettings>
     </option>
   </component>
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 5f0cf35..9f8f814 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -10,7 +10,7 @@
       </map>
     </option>
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/app/build.gradle b/app/build.gradle
index e6b5927..8a21a2a 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -3,12 +3,13 @@ apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-kapt'
 
 android {
-    compileSdkVersion 31
-    buildToolsVersion "31.0.0"
+    namespace 'com.github.adriankuta'
+    compileSdkVersion 33
+    buildToolsVersion "33.0.0"
     defaultConfig {
         applicationId "com.github.adriankuta"
         minSdkVersion 23
-        targetSdkVersion 31
+        targetSdkVersion 33
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
@@ -30,11 +31,13 @@ android {
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
-    implementation 'androidx.appcompat:appcompat:1.3.1'
-    implementation 'androidx.core:core-ktx:1.6.0'
-    implementation 'androidx.constraintlayout:constraintlayout:2.1.0'
-    implementation 'com.github.adriankuta:expandable-recyclerView:1.0.0'
+    implementation 'androidx.appcompat:appcompat:1.5.1'
+    implementation 'androidx.core:core-ktx:1.9.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+
+    implementation project(path: ':expandable-recyclerview')
+
     testImplementation 'junit:junit:4.13.2'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.4'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.0'
 }
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 332a9ad..bdb1e58 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.github.adriankuta">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
     <application
         android:allowBackup="true"
diff --git a/app/src/main/java/com/github/adriankuta/MainActivity.kt b/app/src/main/java/com/github/adriankuta/MainActivity.kt
index 824f7f8..59cd3f5 100644
--- a/app/src/main/java/com/github/adriankuta/MainActivity.kt
+++ b/app/src/main/java/com/github/adriankuta/MainActivity.kt
@@ -2,8 +2,6 @@ package com.github.adriankuta
 
 import android.os.Bundle
 import androidx.appcompat.app.AppCompatActivity
-import androidx.recyclerview.widget.LinearLayoutManager
-import androidx.recyclerview.widget.RecyclerView
 import com.github.adriankuta.databinding.ActivityMainBinding
 import com.github.adriankuta.expandable_recyclerview.expandableTree
 
@@ -13,8 +11,8 @@ class MainActivity : AppCompatActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_main)
         binding = ActivityMainBinding.inflate(layoutInflater)
+        setContentView(binding.root)
 
         val tree = expandableTree("World") {
             child("North America") {
@@ -31,12 +29,8 @@ class MainActivity : AppCompatActivity() {
             }
         }
 
-        with(binding) {
-            val adapter = ExpandableAdapter()
-            recyclerView.layoutManager = LinearLayoutManager(this@MainActivity, RecyclerView.VERTICAL, false)
-            recyclerView.adapter = adapter
-
-            adapter.setTree(tree)
-        }
+        val adapter = ExpandableAdapter()
+        binding.recyclerView.adapter = adapter
+        adapter.setTree(tree)
     }
 }
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 8a8a45f..bcab67f 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -10,6 +10,8 @@
         android:id="@+id/recyclerView"
         android:layout_width="0dp"
         android:layout_height="0dp"
+        android:orientation="vertical"
+        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
diff --git a/build.gradle b/build.gradle
index 7f01fbf..d532322 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,14 +1,14 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.5.30'
+    ext.kotlin_version = '1.7.20'
     repositories {
         google()
         mavenCentral()
 
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.0.2'
+        classpath 'com.android.tools.build:gradle:7.3.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
diff --git a/expandable-recyclerview/build.gradle b/expandable-recyclerview/build.gradle
index 5baf3f2..fdd5187 100644
--- a/expandable-recyclerview/build.gradle
+++ b/expandable-recyclerview/build.gradle
@@ -6,14 +6,14 @@ afterEvaluate {
 }
 
 android {
-    compileSdkVersion 31
-    buildToolsVersion "31.0.0"
+    namespace 'com.github.adriankuta.expandable_recyclerview'
+    compileSdkVersion 33
+    buildToolsVersion "33.0.0"
 
 
     defaultConfig {
         minSdkVersion 23
-        targetSdkVersion 31
-        versionName "2.0.0"
+        targetSdkVersion 33
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         consumerProguardFiles 'consumer-rules.pro'
@@ -30,14 +30,14 @@ android {
 
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
-    implementation 'androidx.appcompat:appcompat:1.3.1'
-    implementation 'androidx.core:core-ktx:1.6.0'
-    implementation "androidx.recyclerview:recyclerview:1.2.1"
-    implementation "com.github.adriankuta:tree-structure:2.0.3"
+    implementation 'androidx.appcompat:appcompat:1.5.1'
+    implementation 'androidx.core:core-ktx:1.9.0'
+    api "androidx.recyclerview:recyclerview:1.2.1"
+    api "com.github.adriankuta:tree-structure:2.0.3"
 
     testImplementation 'junit:junit:4.13.2'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.4'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.0'
 }
 
 ext {
diff --git a/expandable-recyclerview/src/androidTest/java/com/github/adriankuta/expandable_recyclerview/ExampleInstrumentedTest.kt b/expandable-recyclerview/src/androidTest/java/com/github/adriankuta/expandable_recyclerview/ExampleInstrumentedTest.kt
index 77d99f3..a13f6ba 100644
--- a/expandable-recyclerview/src/androidTest/java/com/github/adriankuta/expandable_recyclerview/ExampleInstrumentedTest.kt
+++ b/expandable-recyclerview/src/androidTest/java/com/github/adriankuta/expandable_recyclerview/ExampleInstrumentedTest.kt
@@ -1,13 +1,11 @@
 package com.github.adriankuta.expandable_recyclerview
 
-import androidx.test.platform.app.InstrumentationRegistry
 import androidx.test.ext.junit.runners.AndroidJUnit4
-
+import androidx.test.platform.app.InstrumentationRegistry
+import org.junit.Assert.*
 import org.junit.Test
 import org.junit.runner.RunWith
 
-import org.junit.Assert.*
-
 /**
  * Instrumented test, which will execute on an Android device.
  *
diff --git a/expandable-recyclerview/src/main/AndroidManifest.xml b/expandable-recyclerview/src/main/AndroidManifest.xml
index 7a24aac..cc947c5 100644
--- a/expandable-recyclerview/src/main/AndroidManifest.xml
+++ b/expandable-recyclerview/src/main/AndroidManifest.xml
@@ -1,2 +1 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.github.adriankuta.expandable_recyclerview" />
+<manifest />
diff --git a/expandable-recyclerview/src/main/java/com/github/adriankuta/expandable_recyclerview/ExpandableTreeNode.kt b/expandable-recyclerview/src/main/java/com/github/adriankuta/expandable_recyclerview/ExpandableTreeNode.kt
index 5c22118..e12d184 100644
--- a/expandable-recyclerview/src/main/java/com/github/adriankuta/expandable_recyclerview/ExpandableTreeNode.kt
+++ b/expandable-recyclerview/src/main/java/com/github/adriankuta/expandable_recyclerview/ExpandableTreeNode.kt
@@ -7,7 +7,7 @@ class ExpandableTreeNode<T>(value: T) : TreeNode<T>(value) {
 
     var expanded: Boolean = true
 
-    override fun child(value: T, childDeclaration: ChildDeclaration<T>?) : ExpandableTreeNode<T> {
+    override fun child(value: T, childDeclaration: ChildDeclaration<T>?): ExpandableTreeNode<T> {
         val newChild = ExpandableTreeNode(value)
         if (childDeclaration != null)
             newChild.childDeclaration()
diff --git a/expandable-recyclerview/src/test/java/com/github/adriankuta/expandable_recyclerview/ExampleUnitTest.kt b/expandable-recyclerview/src/test/java/com/github/adriankuta/expandable_recyclerview/ExampleUnitTest.kt
index a4b6b0f..754f1b2 100644
--- a/expandable-recyclerview/src/test/java/com/github/adriankuta/expandable_recyclerview/ExampleUnitTest.kt
+++ b/expandable-recyclerview/src/test/java/com/github/adriankuta/expandable_recyclerview/ExampleUnitTest.kt
@@ -1,9 +1,8 @@
 package com.github.adriankuta.expandable_recyclerview
 
+import org.junit.Assert.assertEquals
 import org.junit.Test
 
-import org.junit.Assert.*
-
 /**
  * Example local unit test, which will execute on the development machine (host).
  *
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 3f5d1b2..1cff51b 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-7.0.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-all.zip