diff --git a/build.gradle b/build.gradle
index 0386312..5a64852 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,10 +1,11 @@
 buildscript {
     repositories {
-        mavenCentral()
+        jcenter()
+        google()
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.0'
+        classpath 'com.android.tools.build:gradle:3.0.0-beta6'
     }
 }
 
@@ -13,6 +14,7 @@ allprojects {
     group = GROUP
 
     repositories {
-        mavenCentral()
+        jcenter()
+        google()
     }
 }
\ No newline at end of file
diff --git a/circleimageview/build.gradle b/circleimageview/build.gradle
index a2f2dea..796806e 100644
--- a/circleimageview/build.gradle
+++ b/circleimageview/build.gradle
@@ -1,17 +1,17 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion '25.0.2'
+    compileSdkVersion 26
+    buildToolsVersion '26.0.1'
 
     defaultConfig {
         minSdkVersion 8
-        targetSdkVersion 25
+        targetSdkVersion 26
     }
 }
 
 dependencies {
-    provided 'com.android.support:support-annotations:25.2.0'
+    provided 'com.android.support:support-annotations:26.1.0'
 }
 
 apply from: 'https://raw.github.com/hdodenhof/gradle-mvn-push/master/gradle-mvn-push.gradle'
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 4bbe3b7..294a2c3 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Sun Mar 12 16:31:51 CET 2017
+#Fri Sep 29 10:49:45 CEST 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
diff --git a/sample/build.gradle b/sample/build.gradle
index 8751439..01fc173 100644
--- a/sample/build.gradle
+++ b/sample/build.gradle
@@ -1,12 +1,12 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion '25.0.2'
+    compileSdkVersion 26
+    buildToolsVersion '26.0.1'
 
     defaultConfig {
         minSdkVersion 8
-        targetSdkVersion 25
+        targetSdkVersion 26
     }
 }