diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index 460b26b..1fa581e 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -7,7 +7,7 @@
         <option name="testRunner" value="GRADLE" />
         <option name="distributionType" value="DEFAULT_WRAPPED" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="gradleJvm" value="Embedded JDK" />
+        <option name="gradleJvm" value="jbr-17" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />
diff --git a/app/build.gradle b/app/build.gradle
index 1ecf7aa..0adce90 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -4,12 +4,13 @@ plugins {
 }
 
 android {
-    compileSdkVersion 33
+    compileSdkVersion 34
+    namespace 'com.a_lab.textarc'
 
     defaultConfig {
         applicationId "com.a_lab.textarc"
         minSdkVersion 23
-        targetSdkVersion 33
+        targetSdkVersion 34
         versionCode 1
         versionName "1.0"
 
@@ -34,10 +35,7 @@ android {
 dependencies {
     implementation project(path: ':textarc')
 
-
-    implementation 'androidx.appcompat:appcompat:1.6.1'
-    implementation 'com.google.android.material:material:1.8.0'
-    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    implementation 'com.google.android.material:material:1.10.0'
 
     testImplementation 'junit:junit:'
     androidTestImplementation 'androidx.test.ext:junit:1.1.5'
diff --git a/build.gradle b/build.gradle
index af5f819..cd4c30b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.4.2'
+        classpath 'com.android.tools.build:gradle:8.1.4'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.8.10"
 
         // NOTE: Do not place your application dependencies here; they belong
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 1da0eac..475124f 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 #Fri Mar 24 22:29:14 MSK 2023
 distributionBase=GRADLE_USER_HOME
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-bin.zip
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
diff --git a/textarc/build.gradle b/textarc/build.gradle
index c454620..fcea847 100644
--- a/textarc/build.gradle
+++ b/textarc/build.gradle
@@ -4,11 +4,12 @@ plugins {
 }
 
 android {
-    compileSdkVersion 33
+    compileSdkVersion 34
+    namespace 'com.a_lab.textarc'
 
     defaultConfig {
         minSdkVersion 23
-        targetSdkVersion 33
+        targetSdkVersion 34
         versionCode 1
         versionName "1.0"
 
@@ -33,7 +34,6 @@ android {
 dependencies {
 
     implementation 'androidx.appcompat:appcompat:1.6.1'
-    implementation 'com.google.android.material:material:1.8.0'
     testImplementation 'junit:junit:'
     androidTestImplementation 'androidx.test.ext:junit:1.1.5'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
diff --git a/textarc/src/main/AndroidManifest.xml b/textarc/src/main/AndroidManifest.xml
index 011bf11..a5918e6 100644
--- a/textarc/src/main/AndroidManifest.xml
+++ b/textarc/src/main/AndroidManifest.xml
@@ -1,5 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.a_lab.textarc">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
 </manifest>
\ No newline at end of file
diff --git a/textarc/src/main/java/com/a_lab/textarc/TextArc.kt b/textarc/src/main/java/com/a_lab/textarc/TextArc.kt
index f1d1fc2..9ca6ce1 100644
--- a/textarc/src/main/java/com/a_lab/textarc/TextArc.kt
+++ b/textarc/src/main/java/com/a_lab/textarc/TextArc.kt
@@ -3,6 +3,7 @@ package com.a_lab.textarc
 import android.content.Context
 import android.graphics.*
 import android.util.AttributeSet
+import android.util.Log
 import android.view.View
 import androidx.core.content.res.ResourcesCompat
 
@@ -29,6 +30,7 @@ class TextArc @JvmOverloads constructor(
 
     private var textColor = Color.WHITE
     private var fontFamily: Typeface? = null
+    private var letterSpacing: Float = 0f
 
     private val paintText = Paint(Paint.ANTI_ALIAS_FLAG)
     private var offset = 0
@@ -54,13 +56,11 @@ class TextArc @JvmOverloads constructor(
             }
         }
 
+        letterSpacing = typedArray.getFloat(R.styleable.TextArc_letter_spacing, letterSpacing)
+
         typedArray.recycle();
     }
 
-    override fun onAttachedToWindow() {
-        super.onAttachedToWindow()
-
-    }
 
     override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
         super.onMeasure(widthMeasureSpec, heightMeasureSpec)
@@ -76,6 +76,7 @@ class TextArc @JvmOverloads constructor(
         paintText.color = textColor
         paintText.typeface = fontFamily
         paintText.textSize = textSize.toFloat()
+        paintText.letterSpacing = letterSpacing
 
         super.onLayout(changed, left, top, right, bottom)
     }
@@ -151,4 +152,13 @@ class TextArc @JvmOverloads constructor(
         invalidate()
     }
 
+    /**
+     * Sets letter spacing.
+     * @param letterSpacing Letter spacing.
+     */
+    fun setLetterSpacing(letterSpacing: Float) {
+        this.letterSpacing = letterSpacing
+        invalidate()
+    }
+
 }
\ No newline at end of file
diff --git a/textarc/src/main/res/values/attrs.xml b/textarc/src/main/res/values/attrs.xml
index c62e364..affee30 100644
--- a/textarc/src/main/res/values/attrs.xml
+++ b/textarc/src/main/res/values/attrs.xml
@@ -8,6 +8,7 @@
         <attr name="text_size" format="dimension"/>
         <attr name="text_color" format="color"/>
         <attr name="font_family" format="reference"/>
+        <attr name="letter_spacing" format="float"/>
         <attr name="text" format="string"/>
 
     </declare-styleable>