diff --git a/app-mvp/build.gradle b/app-mvp/build.gradle
index 01e8cd9..62fe739 100644
--- a/app-mvp/build.gradle
+++ b/app-mvp/build.gradle
@@ -2,7 +2,6 @@ apply plugin: 'com.android.application'
 
 android {
     compileSdkVersion rootProject.ext.androidCompileSdkVersion
-    buildToolsVersion rootProject.ext.androidBuildToolsVersion
 
     defaultConfig {
         applicationId "uk.ivanc.archimvp"
@@ -22,17 +21,17 @@ android {
 dependencies {
     Map<String, String> dependencies = rootProject.ext.dependencies;
 
-    compile dependencies.appCompat
-    compile dependencies.cardView
-    compile dependencies.recyclerView
-    compile dependencies.retrofit
-    compile dependencies.retrofitConverterGson
-    compile dependencies.retrofitAdapterRxJava
-    compile dependencies.picasso
-    compile dependencies.rxAndroid
-    compile dependencies.circleImageView
+    implementation dependencies.appCompat
+    implementation dependencies.cardView
+    implementation dependencies.recyclerView
+    implementation dependencies.retrofit
+    implementation dependencies.retrofitConverterGson
+    implementation dependencies.retrofitAdapterRxJava
+    implementation dependencies.picasso
+    implementation dependencies.rxAndroid
+    implementation dependencies.circleImageView
 
-    testCompile dependencies.jUnit
-    testCompile dependencies.mockito
-    testCompile dependencies.robolectric
+    implementation dependencies.jUnit
+    implementation dependencies.mockito
+    implementation dependencies.robolectric
 }
\ No newline at end of file
diff --git a/app-mvvm/build.gradle b/app-mvvm/build.gradle
index 4bdbfc7..cda4a64 100644
--- a/app-mvvm/build.gradle
+++ b/app-mvvm/build.gradle
@@ -2,7 +2,6 @@ apply plugin: 'com.android.application'
 
 android {
     compileSdkVersion rootProject.ext.androidCompileSdkVersion
-    buildToolsVersion rootProject.ext.androidBuildToolsVersion
 
     defaultConfig {
         applicationId "uk.ivanc.archimvvm"
@@ -27,17 +26,17 @@ android {
 dependencies {
     Map<String, String> dependencies = rootProject.ext.dependencies;
 
-    compile dependencies.appCompat
-    compile dependencies.cardView
-    compile dependencies.recyclerView
-    compile dependencies.retrofit
-    compile dependencies.retrofitConverterGson
-    compile dependencies.retrofitAdapterRxJava
-    compile dependencies.picasso
-    compile dependencies.rxAndroid
-    compile dependencies.circleImageView
+    implementation dependencies.appCompat
+    implementation dependencies.cardView
+    implementation dependencies.recyclerView
+    implementation dependencies.retrofit
+    implementation dependencies.retrofitConverterGson
+    implementation dependencies.retrofitAdapterRxJava
+    implementation dependencies.picasso
+    implementation dependencies.rxAndroid
+    implementation dependencies.circleImageView
 
-    testCompile dependencies.jUnit
-    testCompile dependencies.mockito
-    testCompile dependencies.robolectric
+    implementation dependencies.jUnit
+    implementation dependencies.mockito
+    implementation dependencies.robolectric
 }
diff --git a/app/build.gradle b/app/build.gradle
index 274c20e..2584d5c 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -2,7 +2,6 @@ apply plugin: 'com.android.application'
 
 android {
     compileSdkVersion rootProject.ext.androidCompileSdkVersion
-    buildToolsVersion rootProject.ext.androidBuildToolsVersion
 
     defaultConfig {
         applicationId "uk.ivanc.archi"
@@ -22,13 +21,13 @@ android {
 dependencies {
     Map<String, String> dependencies = rootProject.ext.dependencies;
 
-    compile dependencies.appCompat
-    compile dependencies.cardView
-    compile dependencies.recyclerView
-    compile dependencies.retrofit
-    compile dependencies.retrofitConverterGson
-    compile dependencies.retrofitAdapterRxJava
-    compile dependencies.picasso
-    compile dependencies.rxAndroid
-    compile dependencies.circleImageView
+    implementation dependencies.appCompat
+    implementation dependencies.cardView
+    implementation dependencies.recyclerView
+    implementation dependencies.retrofit
+    implementation dependencies.retrofitConverterGson
+    implementation dependencies.retrofitAdapterRxJava
+    implementation dependencies.picasso
+    implementation dependencies.rxAndroid
+    implementation dependencies.circleImageView
 }
diff --git a/build.gradle b/build.gradle
index 29dd2c2..93bb1ad 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,15 +3,17 @@ apply from: 'dependencies.gradle'
 buildscript {
     repositories {
         jcenter()
+        google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.3'
+        classpath 'com.android.tools.build:gradle:3.5.1'
     }
 }
 
 allprojects {
     repositories {
         jcenter()
+        google()
     }
 }
 
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 378ad43..223a110 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Wed Feb 08 10:20:43 GMT 2017
+#Thu Oct 03 16:49:46 PKT 2019
 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-5.4.1-all.zip