diff --git a/app/build.gradle b/app/build.gradle
index a25eb2d5a..8e907b3c3 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -11,13 +11,12 @@ if (keystorePropertiesFile.exists()) {
 }
 
 android {
-    compileSdkVersion 29
-    buildToolsVersion "29.0.3"
+    compileSdkVersion 30
 
     defaultConfig {
         applicationId "com.simplemobiletools.calendar.pro"
         minSdkVersion 21
-        targetSdkVersion 29
+        targetSdkVersion 30
         versionCode 192
         versionName "6.13.0"
         multiDexEnabled true
diff --git a/build.gradle b/build.gradle
index ce2f58d09..0ea14ab23 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.4.30'
+    ext.kotlin_version = '1.4.31'
 
     repositories {
         google()