diff --git a/app/build.gradle b/app/build.gradle
index 8e2e2b8..4df4642 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -40,7 +40,7 @@
 
     defaultConfig {
         applicationId "nl.digital_me.dummyandroidapp"
-        minSdkVersion 14
+        minSdkVersion rootProject.ext.minSdkVersion
         targetSdkVersion rootProject.ext.compileSdkVersion
         versionCode project.hasProperty('versionCode') ? project.property('versionCode') as int : 71
         versionName project.hasProperty('versionName') ? project.property('versionName') : "0.0.5"
@@ -138,7 +138,7 @@
 
 dependencies {
     //compile fileTree(dir: 'libs', include: ['*.jar'])
-    testImplementation "junit:junit:$rootProject.junitVersion"
+    testImplementation "junit:junit:$rootProject.ext.junitVersion"
     testImplementation "org.mockito:mockito-core:2.19.0"
     implementation "com.android.support:appcompat-v7:${rootProject.ext.supportLibVersion}"
     implementation "com.android.support:design:${rootProject.ext.supportLibVersion}"
diff --git a/build.gradle b/build.gradle
index 4426c7f..f184424 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,14 +1,29 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
+
+    ext {
+        // Sdk and tools
+        compileSdkVersion = 28
+        minSdkVersion = 14
+        targetSdkVersion = 28
+
+        // App dependencies
+        buildToolsVersion = "28.0.3"
+        supportLibVersion = "28.0.0"
+        junitVersion = '4.12'
+        gradleVersion = '3.2.0'
+    }
+
     repositories {
     	// For the Gradle plugin and its deps
         maven { url "https://maven.google.com" }
         jcenter()
     }
+
     dependencies {
         // https://jcenter.bintray.com/com/android/tools/build/gradle
-        classpath 'com.android.tools.build:gradle:3.2.0'
+        classpath "com.android.tools.build:gradle:$gradleVersion"
     }
 }
 
@@ -20,15 +35,6 @@
     }
 }
 
-//This block encapsulates custom properties and makes them available to all
-//modules in the project.
-ext {
-    compileSdkVersion = 28
-    buildToolsVersion = "28.0.2"
-    supportLibVersion = "28.0.0"
-    junitVersion = '4.12'
-}
-
 task clean(type: Delete) {
     delete rootProject.buildDir
 }