diff --git a/android-easylocation/build.gradle b/android-easylocation/build.gradle
index 4b4aa0e..fcba0f9 100644
--- a/android-easylocation/build.gradle
+++ b/android-easylocation/build.gradle
@@ -24,12 +24,12 @@ ext {
 }
 //noinspection GroovyMissingReturnStatement
 android {
-    compileSdkVersion 24
-    buildToolsVersion "24.0.3"
+    compileSdkVersion rootProject.ext.compile_sdk_version
+    buildToolsVersion rootProject.ext.build_tools_version
 
     defaultConfig {
-        minSdkVersion 15
-        targetSdkVersion 24
+        minSdkVersion rootProject.ext.min_sdk_version
+        targetSdkVersion rootProject.ext.target_sdk_version
         versionCode 1
         versionName "1.0.2"
 
@@ -46,12 +46,15 @@ android {
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
-    provided "com.google.android.gms:play-services-location:9.2.0"
+    provided ("com.google.android.gms:play-services-location:$play_services_version") {
+        exclude group: "com.android.support", module: "support-v4"
+        exclude group: "com.android.support", module: "support-media-compat"
+    }
 
     androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    compile 'com.android.support:appcompat-v7:24.2.1'
+    implementation "com.android.support:appcompat-v7:$support_version"
     testCompile 'junit:junit:4.12'
 }
 apply from: 'https://raw.githubusercontent.com/nuuneoi/JCenter/master/installv1.gradle'
diff --git a/app/build.gradle b/app/build.gradle
index 1510768..cd40128 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,14 +1,14 @@
 apply plugin: 'com.android.application'
-apply plugin: 'android-apt'
 
 //noinspection GroovyMissingReturnStatement,GroovyMissingReturnStatement
 android {
-    compileSdkVersion 24
-    buildToolsVersion "24.0.3"
+    compileSdkVersion rootProject.ext.compile_sdk_version
+    buildToolsVersion rootProject.ext.build_tools_version
+
     defaultConfig {
         applicationId "com.akhgupta.easylocation.demo"
-        minSdkVersion 15
-        targetSdkVersion 24
+        minSdkVersion rootProject.ext.min_sdk_version
+        targetSdkVersion rootProject.ext.target_sdk_version
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -23,16 +23,19 @@ android {
 
 dependencies {
     compile fileTree(include: ['*.jar'], dir: 'libs')
-    compile 'com.jakewharton:butterknife:8.4.0'
-    apt 'com.jakewharton:butterknife-compiler:8.4.0'
-    compile "com.google.android.gms:play-services-location:9.6.0"
+    compile "com.jakewharton:butterknife:$butterknife_version"
+    annotationProcessor "com.jakewharton:butterknife-compiler:$butterknife_version"
+    implementation ("com.google.android.gms:play-services-location:$play_services_version") {
+        exclude group: "com.android.support", module: "support-v4"
+        exclude group: "com.android.support", module: "support-media-compat"
+    }
 
 
 
     androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    compile 'com.android.support:appcompat-v7:24.2.1'
+    implementation "com.android.support:appcompat-v7:$support_version"
     testCompile 'junit:junit:4.12'
     compile project(':android-easylocation')
 }
diff --git a/build.gradle b/build.gradle
index c42821b..e9aa643 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,12 +1,22 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
+    ext.compile_sdk_version = 27
+    ext.build_tools_version = '27.0.0'
+    ext.min_sdk_version = 15
+    ext.target_sdk_version = 27
+
+    ext.support_version = '27.0.0'
+    ext.play_services_version = '11.4.2'
+    ext.butterknife_version = '8.8.0'
+
     repositories {
+        google()
         jcenter()
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.2'
+        classpath 'com.android.tools.build:gradle:3.0.0'
         classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
         classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.4'
         classpath 'com.github.dcendents:android-maven-gradle-plugin:1.4.1'
@@ -19,6 +29,7 @@ buildscript {
 
 allprojects {
     repositories {
+        google()
         jcenter()
     }
 }
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 04e285f..fc9b829 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ 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-4.1-all.zip