diff --git a/RNTester/android/app/build.gradle b/RNTester/android/app/build.gradle
index 95d02acb788a99..e8d65deffbd1f0 100644
--- a/RNTester/android/app/build.gradle
+++ b/RNTester/android/app/build.gradle
@@ -83,13 +83,13 @@ def enableSeparateBuildPerCPUArchitecture = false
 def enableProguardInReleaseBuilds = false
 
 android {
-    compileSdkVersion 23
-    buildToolsVersion "23.0.1"
+    compileSdkVersion 27
+    buildToolsVersion "27.0.2"
 
     defaultConfig {
         applicationId "com.facebook.react.uiapp"
         minSdkVersion 16
-        targetSdkVersion 23
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
         ndk {
diff --git a/RNTester/android/app/src/main/AndroidManifest.xml b/RNTester/android/app/src/main/AndroidManifest.xml
index 0bde8735a3a8b2..1b6ee78dcd5b57 100644
--- a/RNTester/android/app/src/main/AndroidManifest.xml
+++ b/RNTester/android/app/src/main/AndroidManifest.xml
@@ -18,7 +18,7 @@
 
   <uses-sdk
     android:minSdkVersion="16"
-    android:targetSdkVersion="23" />
+    android:targetSdkVersion="27" />
 
   <!--
   android:icon is used to display launcher icon on mobile devices.
diff --git a/ReactAndroid/build.gradle b/ReactAndroid/build.gradle
index fdea9de2db7eb1..3ae15eeb89d9a7 100644
--- a/ReactAndroid/build.gradle
+++ b/ReactAndroid/build.gradle
@@ -231,12 +231,12 @@ task packageReactNdkLibsForBuck(dependsOn: packageReactNdkLibs, type: Copy) {
 }
 
 android {
-    compileSdkVersion 23
-    buildToolsVersion "23.0.1"
+    compileSdkVersion 27
+    buildToolsVersion "27.0.2"
 
     defaultConfig {
         minSdkVersion 16
-        targetSdkVersion 22
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
 
diff --git a/build.gradle b/build.gradle
index fb60c323a26335..255fa481ab8ccb 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@ buildscript {
         mavenLocal()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.2'
+        classpath 'com.android.tools.build:gradle:2.3.3'
         classpath 'de.undercouch:gradle-download-task:3.1.2'
 
         // NOTE: Do not place your application dependencies here; they belong
@@ -18,6 +18,7 @@ allprojects {
     repositories {
         jcenter()
         mavenLocal()
+        google()
 
         def androidSdk = System.getenv("ANDROID_SDK")
         maven {
diff --git a/local-cli/templates/HelloWorld/android/app/build.gradle b/local-cli/templates/HelloWorld/android/app/build.gradle
index ec6f3022572ae6..0935b160376e54 100644
--- a/local-cli/templates/HelloWorld/android/app/build.gradle
+++ b/local-cli/templates/HelloWorld/android/app/build.gradle
@@ -94,13 +94,13 @@ def enableSeparateBuildPerCPUArchitecture = false
 def enableProguardInReleaseBuilds = false
 
 android {
-    compileSdkVersion 23
-    buildToolsVersion "23.0.1"
+    compileSdkVersion 27
+    buildToolsVersion "27.0.2"
 
     defaultConfig {
         applicationId "com.helloworld"
         minSdkVersion 16
-        targetSdkVersion 22
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
         ndk {
diff --git a/local-cli/templates/HelloWorld/android/build.gradle b/local-cli/templates/HelloWorld/android/build.gradle
index eed9972b5c13ea..9d0bb22bb9abe4 100644
--- a/local-cli/templates/HelloWorld/android/build.gradle
+++ b/local-cli/templates/HelloWorld/android/build.gradle
@@ -16,6 +16,8 @@ allprojects {
     repositories {
         mavenLocal()
         jcenter()
+        google()
+
         maven {
             // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
             url "$rootDir/../node_modules/react-native/android"