diff --git a/build.gradle b/build.gradle
index e148820..f085933 100644
--- a/build.gradle
+++ b/build.gradle
@@ -4,7 +4,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:0.10.+'
+        classpath 'com.android.tools.build:gradle:1.3.0'
     }
 }
 
diff --git a/demo/build.gradle b/demo/build.gradle
index d0b160d..2f9ec57 100644
--- a/demo/build.gradle
+++ b/demo/build.gradle
@@ -5,14 +5,14 @@ dependencies {
 }
 
 android {
-    compileSdkVersion 19
-    buildToolsVersion "19.0.3"
+    compileSdkVersion 23
+    buildToolsVersion '23.0.1'
 
     defaultConfig {
         versionCode 1
         versionName '1.0.0'
         minSdkVersion 9
-        targetSdkVersion 19
+        targetSdkVersion 23
     }
 
     sourceSets {
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 46e8179..29b90aa 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Tue Mar 04 09:42:43 EST 2014
+#Tue Oct 27 11:05:58 CET 2015
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=http\://services.gradle.org/distributions/gradle-1.10-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.4-all.zip
diff --git a/library/build.gradle b/library/build.gradle
index 50608d5..4d1f988 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -4,18 +4,18 @@ group GROUP
 version VERSION_NAME
 
 android {
-    compileSdkVersion 19
-    buildToolsVersion "19.0.3"
+    compileSdkVersion 23
+    buildToolsVersion '23.0.1'
 
     defaultConfig {
         minSdkVersion 9
-        targetSdkVersion 19
+        targetSdkVersion 23
         versionCode 1
         versionName version
     }
     buildTypes {
         release {
-            runProguard false
+            minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
         }
     }
@@ -23,7 +23,7 @@ android {
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile 'com.android.support:support-v4:19.1.+'
+    compile 'com.android.support:support-v4:23.1.0'
 }
 
 
diff --git a/library/src/main/java/it/sephiroth/android/library/widget/OverScroller.java b/library/src/main/java/it/sephiroth/android/library/widget/OverScroller.java
index e664c99..9560307 100644
--- a/library/src/main/java/it/sephiroth/android/library/widget/OverScroller.java
+++ b/library/src/main/java/it/sephiroth/android/library/widget/OverScroller.java
@@ -18,7 +18,7 @@
 
 import android.content.Context;
 import android.hardware.SensorManager;
-import android.util.FloatMath;
+import java.lang.Math;
 import android.util.Log;
 import android.view.ViewConfiguration;
 import android.view.animation.AnimationUtils;
@@ -200,7 +200,7 @@ public final int getCurrY() {
     public float getCurrVelocity() {
         float squaredNorm = mScrollerX.mCurrVelocity * mScrollerX.mCurrVelocity;
         squaredNorm += mScrollerY.mCurrVelocity * mScrollerY.mCurrVelocity;
-        return FloatMath.sqrt(squaredNorm);
+        return (float) Math.sqrt(squaredNorm);
     }
 
     /**