diff --git a/apk/sample.apk b/apk/sample.apk
index 9684d0c..411bdca 100644
Binary files a/apk/sample.apk and b/apk/sample.apk differ
diff --git a/app/build.gradle b/app/build.gradle
index bd7055b..7f90353 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -7,8 +7,8 @@ android {
         applicationId "com.xw.samlpe.bubbleseekbar"
         minSdkVersion 14
         targetSdkVersion 25
-        versionCode 2
-        versionName "1.1"
+        versionCode 3
+        versionName "1.2"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
 
@@ -34,8 +34,8 @@ dependencies {
     androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    compile 'com.android.support:appcompat-v7:25.1.0'
-    compile 'com.android.support:design:25.1.0'
+    compile 'com.android.support:appcompat-v7:25.2.0'
+    compile 'com.android.support:design:25.2.0'
     testCompile 'junit:junit:4.12'
     compile project(':bubbleseekbar')
 }
diff --git a/build.gradle b/build.gradle
index 26b9329..73fb7af 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.3'
+        classpath 'com.android.tools.build:gradle:2.3.0'
         classpath 'com.github.dcendents:android-maven-gradle-plugin:1.3'
 
         // 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 04e285f..e594f7b 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Mon Dec 28 10:00:20 PST 2015
+#Fri Mar 10 21:58:07 CST 2017
 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-3.3-all.zip