diff --git a/app/build.gradle b/app/build.gradle
index cdf83db..479934f 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,12 +1,12 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.2"
+    compileSdkVersion 27
+    buildToolsVersion "27.0.3"
     defaultConfig {
         applicationId "com.stone.pile"
         minSdkVersion 14
-        targetSdkVersion 25
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -24,7 +24,7 @@ dependencies {
     androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    compile 'com.android.support:appcompat-v7:25.3.1'
+    compile 'com.android.support:appcompat-v7:27.1.1'
     testCompile 'junit:junit:4.12'
     compile 'com.github.bumptech.glide:glide:3.8.0'
     compile 'com.makeramen:roundedimageview:2.3.0'
diff --git a/build.gradle b/build.gradle
index 74b2ab0..5fe45f8 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,6 +3,10 @@
 buildscript {
     repositories {
         jcenter()
+        maven {
+            url 'https://maven.google.com/'
+            name 'Google'
+        }
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:2.2.3'
@@ -15,6 +19,10 @@ buildscript {
 allprojects {
     repositories {
         jcenter()
+        maven {
+            url 'https://maven.google.com/'
+            name 'Google'
+        }
     }
 }
 
diff --git a/library/build.gradle b/library/build.gradle
index 61945f6..8e901ad 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -1,12 +1,12 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.2"
+    compileSdkVersion 27
+    buildToolsVersion "27.0.3"
 
     defaultConfig {
         minSdkVersion 14
-        targetSdkVersion 25
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
 
@@ -26,6 +26,6 @@ dependencies {
     androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    compile 'com.android.support:appcompat-v7:25.3.1'
+    compile 'com.android.support:appcompat-v7:27.1.1'
     testCompile 'junit:junit:4.12'
 }