diff --git a/library/build.gradle b/library/build.gradle
index 5d4d8f737c..8ccf3cfaca 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -14,7 +14,7 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 19
+    compileSdkVersion 21
     buildToolsVersion "19.1"
 
     defaultConfig {