diff --git a/android-example/decodesdk/build.gradle b/android-example/decodesdk/build.gradle
index e2dac5b..74f5e24 100644
--- a/android-example/decodesdk/build.gradle
+++ b/android-example/decodesdk/build.gradle
@@ -2,7 +2,6 @@ apply plugin: 'com.android.library'
 
 android {
     compileSdkVersion 27
-    buildToolsVersion '27.0.3'
 
     defaultConfig {
         minSdkVersion 19
diff --git a/android-example/web-api/build.gradle b/android-example/web-api/build.gradle
index 9caaea3..665cd78 100644
--- a/android-example/web-api/build.gradle
+++ b/android-example/web-api/build.gradle
@@ -4,7 +4,6 @@ android {
     signingConfigs {
     }
     compileSdkVersion 27
-    buildToolsVersion '27.0.3'
     defaultConfig {
         minSdkVersion 19
         targetSdkVersion 27