diff --git a/app/build.gradle b/app/build.gradle
index 01c8cac..340a017 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -7,7 +7,7 @@ android {
     defaultConfig {
         applicationId "io.github.webbluetoothcg.bletestperipheral"
         minSdkVersion 21
-        targetSdkVersion 21
+        targetSdkVersion 22
         versionCode 1
         versionName "1.0"
     }
diff --git a/build.gradle b/build.gradle
index d3ff69d..43fc425 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:1.1.0'
+        classpath 'com.android.tools.build:gradle:1.2.2'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files