diff --git a/RNTester/android/app/build.gradle b/RNTester/android/app/build.gradle
index 5e5503b5eb7ca6..f7a70e1824b4f5 100644
--- a/RNTester/android/app/build.gradle
+++ b/RNTester/android/app/build.gradle
@@ -84,13 +84,12 @@ def enableSeparateBuildPerCPUArchitecture = false
 def enableProguardInReleaseBuilds = false
 
 android {
-    compileSdkVersion 23
-    buildToolsVersion "23.0.1"
+    compileSdkVersion 27
 
     defaultConfig {
         applicationId "com.facebook.react.uiapp"
         minSdkVersion 16
-        targetSdkVersion 23
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
         ndk {
@@ -136,9 +135,9 @@ android {
 }
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile 'com.android.support:appcompat-v7:23.0.1'
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation 'com.android.support:appcompat-v7:27.1.1'
 
     // Build React Native from source
-    compile project(':ReactAndroid')
+    implementation project(':ReactAndroid')
 }
diff --git a/RNTester/android/app/src/main/AndroidManifest.xml b/RNTester/android/app/src/main/AndroidManifest.xml
index 0bde8735a3a8b2..13d3a8a57c8ead 100644
--- a/RNTester/android/app/src/main/AndroidManifest.xml
+++ b/RNTester/android/app/src/main/AndroidManifest.xml
@@ -17,8 +17,7 @@
   <uses-permission android:name="android.permission.READ_CALENDAR"/>
 
   <uses-sdk
-    android:minSdkVersion="16"
-    android:targetSdkVersion="23" />
+    android:minSdkVersion="16" />
 
   <!--
   android:icon is used to display launcher icon on mobile devices.
diff --git a/ReactAndroid/DevExperience.md b/ReactAndroid/DevExperience.md
index 996152908b6ce8..25d1d22323ba74 100644
--- a/ReactAndroid/DevExperience.md
+++ b/ReactAndroid/DevExperience.md
@@ -4,9 +4,9 @@ Assuming you have the [Android SDK](https://developer.android.com/sdk/installing
 
 Make sure you have the following installed:
 
-- Android SDK version 23
-- SDK build tools version 23
-- Android Support Repository 17 (for Android Support Library)
+- Android SDK version 27
+- SDK build tools version 27
+- Android Support Repository 47 (for Android Support Library)
 
 Follow steps on https://github.com/facebook/react-native/blob/master/react-native-cli/CONTRIBUTING.md, but be sure to bump the version of react-native in package.json to some version > 0.9 (latest published npm version) or set up proxying properly for react-native
 
diff --git a/ReactAndroid/build.gradle b/ReactAndroid/build.gradle
index aa23d8898c0fe9..22b835dd016908 100644
--- a/ReactAndroid/build.gradle
+++ b/ReactAndroid/build.gradle
@@ -245,12 +245,11 @@ task packageReactNdkLibsForBuck(dependsOn: packageReactNdkLibs, type: Copy) {
 }
 
 android {
-    compileSdkVersion 23
-    buildToolsVersion "23.0.1"
+    compileSdkVersion 27
 
     defaultConfig {
         minSdkVersion 16
-        targetSdkVersion 22
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
 
@@ -293,18 +292,18 @@ android {
 }
 
 dependencies {
-    compile fileTree(dir: 'src/main/third-party/java/infer-annotations/', include: ['*.jar'])
-    compile 'javax.inject:javax.inject:1'
-    compile 'com.android.support:appcompat-v7:23.0.1'
-    compile 'com.facebook.fbui.textlayoutbuilder:textlayoutbuilder:1.0.0'
-    compile 'com.facebook.fresco:fresco:1.9.0'
-    compile 'com.facebook.fresco:imagepipeline-okhttp3:1.9.0'
-    compile 'com.facebook.soloader:soloader:0.3.0'
-    compile 'com.google.code.findbugs:jsr305:3.0.0'
-    compile 'com.squareup.okhttp3:okhttp:3.10.0'
-    compile 'com.squareup.okhttp3:okhttp-urlconnection:3.10.0'
-    compile 'com.squareup.okio:okio:1.14.0'
-    compile 'org.webkit:android-jsc:r174650'
+    implementation fileTree(dir: 'src/main/third-party/java/infer-annotations/', include: ['*.jar'])
+    implementation 'javax.inject:javax.inject:1'
+    implementation 'com.android.support:appcompat-v7:27.1.1'
+    implementation 'com.facebook.fbui.textlayoutbuilder:textlayoutbuilder:1.0.0'
+    implementation 'com.facebook.fresco:fresco:1.9.0'
+    implementation 'com.facebook.fresco:imagepipeline-okhttp3:1.9.0'
+    implementation 'com.facebook.soloader:soloader:0.3.0'
+    implementation 'com.google.code.findbugs:jsr305:3.0.0'
+    implementation 'com.squareup.okhttp3:okhttp:3.10.0'
+    implementation 'com.squareup.okhttp3:okhttp-urlconnection:3.10.0'
+    implementation 'com.squareup.okio:okio:1.14.0'
+    implementation 'org.webkit:android-jsc:r174650'
 
     testCompile "junit:junit:${JUNIT_VERSION}"
     testCompile "org.powermock:powermock-api-mockito:${POWERMOCK_VERSION}"
diff --git a/ReactAndroid/src/androidTest/AndroidManifest.xml b/ReactAndroid/src/androidTest/AndroidManifest.xml
index f6ce0fa0511cd0..8af4a11c05764d 100644
--- a/ReactAndroid/src/androidTest/AndroidManifest.xml
+++ b/ReactAndroid/src/androidTest/AndroidManifest.xml
@@ -3,7 +3,6 @@
           package="com.facebook.react.tests.gradle"
           android:versionCode="1"
           android:versionName="1.0" >
-  <uses-sdk android:targetSdkVersion="7" />
   <supports-screens android:anyDensity="true" />
   <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
   <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
diff --git a/build.gradle b/build.gradle
index 8cd3d00b2dd0d1..4438b26bbcb6a8 100644
--- a/build.gradle
+++ b/build.gradle
@@ -13,8 +13,8 @@ buildscript {
         }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.2'
-        classpath 'de.undercouch:gradle-download-task:3.1.2'
+        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'de.undercouch:gradle-download-task:3.3.0'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index c8fabc8de00946..f83898bd674da6 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ 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-4.5.1-all.zip
diff --git a/local-cli/link/__fixtures__/android/build.gradle b/local-cli/link/__fixtures__/android/build.gradle
index 07f260d6d48032..5c8d3796ba0298 100644
--- a/local-cli/link/__fixtures__/android/build.gradle
+++ b/local-cli/link/__fixtures__/android/build.gradle
@@ -1,5 +1,5 @@
 dependencies {
-    compile fileTree(dir: "libs", include: ["*.jar"])
-    compile "com.android.support:appcompat-v7:23.0.1"
-    compile "com.facebook.react:react-native:0.18.+"
+    implementation fileTree(dir: "libs", include: ["*.jar"])
+    implementation "com.android.support:appcompat-v7:27.1.1"
+    implementation "com.facebook.react:react-native:0.18.+"
 }
diff --git a/local-cli/link/__fixtures__/android/patchedBuild.gradle b/local-cli/link/__fixtures__/android/patchedBuild.gradle
index 68ccfec2eaa543..8abb351aaf980a 100644
--- a/local-cli/link/__fixtures__/android/patchedBuild.gradle
+++ b/local-cli/link/__fixtures__/android/patchedBuild.gradle
@@ -1,9 +1,9 @@
 dependencies {
-    compile project(':test')
-    compile(project(':test2')) {
+    implementation project(':test')
+    implementation(project(':test2')) {
       exclude(group: 'org.unwanted', module: 'test10')
     }
-    compile fileTree(dir: "libs", include: ["*.jar"])
-    compile "com.android.support:appcompat-v7:23.0.1"
-    compile "com.facebook.react:react-native:0.18.+"
+    implementation fileTree(dir: "libs", include: ["*.jar"])
+    implementation "com.android.support:appcompat-v7:27.1.1"
+    implementation "com.facebook.react:react-native:0.18.+"
 }
diff --git a/local-cli/templates/HelloWorld/android/app/build.gradle b/local-cli/templates/HelloWorld/android/app/build.gradle
index ec6f3022572ae6..6d142eb766af64 100644
--- a/local-cli/templates/HelloWorld/android/app/build.gradle
+++ b/local-cli/templates/HelloWorld/android/app/build.gradle
@@ -94,13 +94,12 @@ def enableSeparateBuildPerCPUArchitecture = false
 def enableProguardInReleaseBuilds = false
 
 android {
-    compileSdkVersion 23
-    buildToolsVersion "23.0.1"
+    compileSdkVersion 27
 
     defaultConfig {
         applicationId "com.helloworld"
         minSdkVersion 16
-        targetSdkVersion 22
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
         ndk {
@@ -137,9 +136,9 @@ android {
 }
 
 dependencies {
-    compile fileTree(dir: "libs", include: ["*.jar"])
-    compile "com.android.support:appcompat-v7:23.0.1"
-    compile "com.facebook.react:react-native:+"  // From node_modules
+    implementation fileTree(dir: "libs", include: ["*.jar"])
+    implementation "com.android.support:appcompat-v7:27.1.1"
+    implementation "com.facebook.react:react-native:+"  // From node_modules
 }
 
 // Run this once to be able to run the application with BUCK
diff --git a/local-cli/templates/HelloWorld/android/build.gradle b/local-cli/templates/HelloWorld/android/build.gradle
index eed9972b5c13ea..0787c2f4fb4631 100644
--- a/local-cli/templates/HelloWorld/android/build.gradle
+++ b/local-cli/templates/HelloWorld/android/build.gradle
@@ -2,10 +2,11 @@
 
 buildscript {
     repositories {
+        google()
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.3'
+        classpath 'com.android.tools.build:gradle:3.0.1'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -20,5 +21,6 @@ allprojects {
             // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
             url "$rootDir/../node_modules/react-native/android"
         }
+        google()
     }
 }
diff --git a/local-cli/templates/HelloWorld/android/gradle/wrapper/gradle-wrapper.properties b/local-cli/templates/HelloWorld/android/gradle/wrapper/gradle-wrapper.properties
index dbdc05d274d7db..8941bfbbedb3e4 100644
--- a/local-cli/templates/HelloWorld/android/gradle/wrapper/gradle-wrapper.properties
+++ b/local-cli/templates/HelloWorld/android/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-2.14.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.5.1-all.zip