diff --git a/app/build.gradle b/app/build.gradle
index 546e7429..d1978ab2 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -2,7 +2,7 @@ apply plugin: 'com.android.application'
 
 android {
     compileSdkVersion = 25
-
+    buildToolsVersion '27.0.3'
     defaultConfig {
         applicationId = 'com.tutpro.baresip'
         minSdkVersion 21