diff --git a/app/build.gradle b/app/build.gradle
index 2a29af128..3bab9bad3 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -2,13 +2,13 @@ apply plugin: 'com.android.application'
 apply plugin: 'io.fabric'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion '25.0.2'
+    compileSdkVersion rootProject.compileSdkVersion
+    buildToolsVersion rootProject.buildToolsVersion
 
     defaultConfig {
         applicationId "naman14.timber"
-        minSdkVersion 16
-        targetSdkVersion 25
+        minSdkVersion rootProject.minSdkVersion
+        targetSdkVersion rootProject.targetSdkVersion
         versionCode 19
         versionName "0.5b"
         //renderscript support mode is not supported for 21+ with gradle version 2.0
@@ -50,12 +50,12 @@ repositories {
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile 'com.android.support:appcompat-v7:25.1.0'
-    compile 'com.android.support:recyclerview-v7:25.1.0'
-    compile 'com.android.support:cardview-v7:25.1.0'
-    compile 'com.android.support:palette-v7:25.1.0'
-    compile 'com.android.support:design:25.1.0'
-    compile 'com.android.support:percent:25.1.0'
+    compile "com.android.support:appcompat-v7:$rootProject.supportLibraryVersion"
+    compile "com.android.support:design:$rootProject.supportLibraryVersion"
+    compile "com.android.support:cardview-v7:$rootProject.supportLibraryVersion"
+    compile "com.android.support:recyclerview-v7:$rootProject.supportLibraryVersion"
+    compile "com.android.support:palette-v7:$rootProject.supportLibraryVersion"
+    compile "com.android.support:percent:$rootProject.supportLibraryVersion"
 
     compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.4'
     compile 'net.steamcrafted:materialiconlib:1.0.3'
diff --git a/build.gradle b/build.gradle
index 18beaf194..21fc49047 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,10 +3,11 @@
 buildscript {
     repositories {
         jcenter()
+        google()
         maven { url 'https://maven.fabric.io/public' }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.0'
+        classpath 'com.android.tools.build:gradle:3.0.0-beta7'
         classpath 'io.fabric.tools:gradle:1.+'
 
         // NOTE: Do not place your application dependencies here; they belong
@@ -17,6 +18,21 @@ buildscript {
 allprojects {
     repositories {
         jcenter()
+        google()
         maven { url "https://jitpack.io" }
     }
 }
+
+ext {
+    // Sdk and tools
+    minSdkVersion = 21
+    targetSdkVersion = 26
+    compileSdkVersion = 26
+    buildToolsVersion = '26.0.2'
+
+    // App dependencies
+    supportLibraryVersion = '26.1.0'
+    retrofitVersion = '2.3.0'
+    okHttp3Version = '3.9.0'
+}
+
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 04a221d82..bf1b63c34 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -2,4 +2,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.5-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip