diff --git a/android/AndroidOpenGLESLessons/app/build.gradle b/android/AndroidOpenGLESLessons/app/build.gradle
index 551907d..53761d3 100644
--- a/android/AndroidOpenGLESLessons/app/build.gradle
+++ b/android/AndroidOpenGLESLessons/app/build.gradle
@@ -1,13 +1,13 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 23
-    buildToolsVersion "23.0.3"
+    compileSdkVersion 25
+    buildToolsVersion "25.0.2"
 
     defaultConfig {
         applicationId "com.learnopengles.android"
         minSdkVersion 9
-        targetSdkVersion 23
+        targetSdkVersion 25
     }
 
     signingConfigs {
diff --git a/android/AndroidOpenGLESLessons/build.gradle b/android/AndroidOpenGLESLessons/build.gradle
index aa14138..97e8b8e 100644
--- a/android/AndroidOpenGLESLessons/build.gradle
+++ b/android/AndroidOpenGLESLessons/build.gradle
@@ -4,7 +4,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.1.2'
+        classpath 'com.android.tools.build:gradle:2.3.0'
     }
 }
 
diff --git a/android/AndroidOpenGLESLessons/gradle/wrapper/gradle-wrapper.properties b/android/AndroidOpenGLESLessons/gradle/wrapper/gradle-wrapper.properties
index 122a0dc..8ff3745 100644
--- a/android/AndroidOpenGLESLessons/gradle/wrapper/gradle-wrapper.properties
+++ b/android/AndroidOpenGLESLessons/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Mon Dec 28 10:00:20 PST 2015
+#Sun Mar 12 15:47:53 EET 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.10-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip