diff --git a/library/build.gradle b/library/build.gradle
index d470c3e..6b9631b 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -2,7 +2,6 @@ apply plugin: 'com.android.library'
 
 android {
     compileSdkVersion Integer.parseInt(project.ANDROID_BUILD_SDK_VERSION)
-    buildToolsVersion project.ANDROID_BUILD_TOOLS_VERSION
 
     defaultConfig {
         minSdkVersion 9