diff --git a/build.gradle b/build.gradle
index c11d60c..52e98c3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,14 +3,16 @@
 buildscript {
     repositories {
         jcenter()
+        google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.3'
+        classpath 'com.android.tools.build:gradle:3.1.2'
     }
 }
 
 allprojects {
     repositories {
         jcenter()
+        google()
     }
 }
diff --git a/demo/build.gradle b/demo/build.gradle
index 934b31c..fe23796 100644
--- a/demo/build.gradle
+++ b/demo/build.gradle
@@ -1,11 +1,11 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.2"
+    compileSdkVersion 27
+    buildToolsVersion '27.0.3'
 
     defaultConfig {
-        minSdkVersion 9
+        minSdkVersion 19
         targetSdkVersion 25
         versionCode 1
         versionName "1.0"
@@ -20,6 +20,6 @@ android {
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile 'com.android.support:appcompat-v7:25.1.1'
+    compile 'com.android.support:appcompat-v7:27.1.1'
     compile project(':library')
 }
diff --git a/demo/src/main/java/com/daimajia/numberprogressbar/example/MainActivity.java b/demo/src/main/java/com/daimajia/numberprogressbar/example/MainActivity.java
index f523a78..063a47c 100644
--- a/demo/src/main/java/com/daimajia/numberprogressbar/example/MainActivity.java
+++ b/demo/src/main/java/com/daimajia/numberprogressbar/example/MainActivity.java
@@ -1,7 +1,7 @@
 package com.daimajia.numberprogressbar.example;
 
 import android.os.Bundle;
-import android.support.v7.app.ActionBarActivity;
+import android.support.v7.app.AppCompatActivity;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.widget.Toast;
@@ -13,7 +13,7 @@
 import java.util.TimerTask;
 
 
-public class MainActivity extends ActionBarActivity implements OnProgressBarListener {
+public class MainActivity extends AppCompatActivity implements OnProgressBarListener {
     private Timer timer;
 
     private NumberProgressBar bnp;
@@ -23,7 +23,7 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
 
-        bnp = (NumberProgressBar)findViewById(R.id.numberbar1);
+        bnp = (NumberProgressBar) findViewById(R.id.numberbar1);
         bnp.setOnProgressBarListener(this);
         timer = new Timer();
         timer.schedule(new TimerTask() {
@@ -66,7 +66,7 @@ protected void onDestroy() {
 
     @Override
     public void onProgressChange(int current, int max) {
-        if(current == max) {
+        if (current == max) {
             Toast.makeText(getApplicationContext(), getString(R.string.finish), Toast.LENGTH_SHORT).show();
             bnp.setProgress(0);
         }
diff --git a/demo/src/main/res/font/nanum_square_round_otfeb.otf b/demo/src/main/res/font/nanum_square_round_otfeb.otf
new file mode 100755
index 0000000..9edf2d9
Binary files /dev/null and b/demo/src/main/res/font/nanum_square_round_otfeb.otf differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index bbf4081..dd11e72 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Thu Feb 16 20:38:04 CST 2017
+#Tue May 15 17:53:13 KST 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
diff --git a/library/src/main/java/com/daimajia/numberprogressbar/NumberProgressBar.java b/library/src/main/java/com/daimajia/numberprogressbar/NumberProgressBar.java
index a48b425..0ca27b0 100644
--- a/library/src/main/java/com/daimajia/numberprogressbar/NumberProgressBar.java
+++ b/library/src/main/java/com/daimajia/numberprogressbar/NumberProgressBar.java
@@ -6,6 +6,7 @@
 import android.graphics.Color;
 import android.graphics.Paint;
 import android.graphics.RectF;
+import android.graphics.Typeface;
 import android.os.Bundle;
 import android.os.Parcelable;
 import android.util.AttributeSet;
@@ -327,6 +328,10 @@ public int getTextColor() {
         return mTextColor;
     }
 
+    public void setTypeFace(Typeface typeFace){
+        mTextPaint.setTypeface(typeFace);
+    }
+
     /**
      * Get progress text size.
      *