diff --git a/build.gradle b/build.gradle
index a112f00..38a4253 100644
--- a/build.gradle
+++ b/build.gradle
@@ -2,10 +2,11 @@
 
 buildscript {
     repositories {
+        google()
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.1'
+        classpath 'com.android.tools.build:gradle:3.0.1'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -15,7 +16,7 @@ buildscript {
 allprojects {
     repositories {
         jcenter()
-        maven { url 'https://maven.google.com' }
+        google()
     }
 }
 
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 13ddd81..94c3bb4 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Thu Apr 27 19:44:03 CEST 2017
+#Thu Jan 04 12:42:19 EET 2018
 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/preference/build.gradle b/preference/build.gradle
index 244994c..9c2227f 100644
--- a/preference/build.gradle
+++ b/preference/build.gradle
@@ -1,11 +1,11 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion "26.0.1"
+    compileSdkVersion 27
+    buildToolsVersion "27.0.3"
     defaultConfig {
         minSdkVersion 16
-        targetSdkVersion 26
+        targetSdkVersion 27
     }
     buildTypes {
         release {
@@ -16,6 +16,6 @@ android {
 }
 
 dependencies {
-    compile "com.android.support:preference-v7:26.0.2"
+    implementation "com.android.support:preference-v7:27.0.2"
     provided 'com.bluelinelabs:conductor:2.1.4'
 }