diff --git a/app/build.gradle b/app/build.gradle
index 315a769..beb8c29 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -4,7 +4,7 @@ import com.android.build.OutputFile
 
 android {
     compileSdkVersion 25
-    buildToolsVersion "26.0.2"
+    buildToolsVersion "27.0.1"
 
     defaultConfig {
         applicationId "com.github.axet.audiorecorder"