diff --git a/build.gradle b/build.gradle
index 9bd1cd153..f8269b01c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,14 +1,28 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
+    ext {
+        propBuildToolsVersion = '27.0.1'
+        propCompileSdkVersion = 27
+        propMinSdkVersion = 16
+        propTargetSdkVersion = propCompileSdkVersion
+        propVersionCode = 1
+        propVersionName = '2.40.0'
+        kotlin_version = '1.1.60'
+        support_libs = '27.0.1'
+    }
+
     repositories {
         jcenter()
-        maven { url 'https://maven.google.com' }
+        google()
     }
+
     dependencies {
         classpath 'com.android.tools.build:gradle:3.0.0'
         classpath 'com.github.dcendents:android-maven-gradle-plugin:1.5'
         classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.7.3'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
     }
@@ -17,7 +31,7 @@ buildscript {
 allprojects {
     repositories {
         jcenter()
-        maven { url 'https://maven.google.com' }
+        google()
         maven { url 'https://jitpack.io' }
     }
 }
@@ -25,14 +39,3 @@ allprojects {
 task clean(type: Delete) {
     delete rootProject.buildDir
 }
-
-ext {
-    propBuildToolsVersion = '27.0.1'
-    propCompileSdkVersion = 27
-    propMinSdkVersion = 16
-    propTargetSdkVersion = propCompileSdkVersion
-    propVersionCode = 1
-    propVersionName = '2.39.10'
-    kotlin_version = '1.1.60'
-    support_libs = '27.0.1'
-}
diff --git a/commons/build.gradle b/commons/build.gradle
index eb7d41c2c..c81122c5f 100644
--- a/commons/build.gradle
+++ b/commons/build.gradle
@@ -27,27 +27,16 @@ android {
 }
 
 dependencies {
-    compile "com.android.support:design:$support_libs"
-    compile "com.android.support:appcompat-v7:$support_libs"
-    compile 'com.github.bumptech.glide:glide:4.3.1'
-    compile 'com.booking:rtlviewpager:1.0.1'
-    compile 'com.andrognito.patternlockview:patternlockview:1.0.0'
-    compile 'com.github.ajalt.reprint:core:3.2.0@aar'
-    compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
-    compile 'com.bignerdranch.android:recyclerview-multiselect:0.2'
+    implementation "com.android.support:design:$support_libs"
+    implementation "com.android.support:appcompat-v7:$support_libs"
+    implementation 'com.github.bumptech.glide:glide:4.3.1'
+    implementation 'com.booking:rtlviewpager:1.0.1'
+    implementation 'com.andrognito.patternlockview:patternlockview:1.0.0'
+    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+    implementation 'com.bignerdranch.android:recyclerview-multiselect:0.2'
+    api 'com.github.ajalt.reprint:core:3.2.0@aar'
 
     annotationProcessor 'com.github.bumptech.glide:compiler:4.3.1'
 }
 
-buildscript {
-    repositories {
-        mavenCentral()
-    }
-
-    dependencies {
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
-        classpath "org.jetbrains.kotlin:kotlin-android-extensions:$kotlin_version"
-    }
-}
-
 apply from: '../bintray-upload.gradle'
diff --git a/samples/build.gradle b/samples/build.gradle
index 7810ac980..85af645ce 100644
--- a/samples/build.gradle
+++ b/samples/build.gradle
@@ -27,19 +27,8 @@ android {
 }
 
 dependencies {
-    compile "com.android.support:appcompat-v7:$support_libs"
-    compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+    implementation "com.android.support:appcompat-v7:$support_libs"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
 
-    compile project(':commons')
-}
-
-buildscript {
-    repositories {
-        mavenCentral()
-    }
-
-    dependencies {
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
-        classpath "org.jetbrains.kotlin:kotlin-android-extensions:$kotlin_version"
-    }
+    implementation project(':commons')
 }