diff --git a/WordPressGraphView/build.gradle b/WordPressGraphView/build.gradle
index 8ae843fc3..81498e6d8 100644
--- a/WordPressGraphView/build.gradle
+++ b/WordPressGraphView/build.gradle
@@ -14,7 +14,7 @@ android {
     publishNonDefault true
 
     compileSdkVersion 19
-    buildToolsVersion "19.1.0"
+    buildToolsVersion "21.1.1"
 
     defaultConfig {
         versionName "3.2.2"