diff --git a/build.gradle b/build.gradle
index 6df6fa1..8e07820 100644
--- a/build.gradle
+++ b/build.gradle
@@ -21,7 +21,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:1.3.0'
+        classpath 'com.android.tools.build:gradle:2.3.0'
     }
 }
 
@@ -30,8 +30,8 @@ repositories {
 }
 
 android {
-    compileSdkVersion 21
-    buildToolsVersion "21.1.2"
+    compileSdkVersion 29
+    buildToolsVersion "29.0.2"
 
     defaultConfig {
         applicationId "ch.phcoder.jigit"