diff --git a/android/build.gradle b/android/build.gradle
index 347112d..390c6fd 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -2,7 +2,7 @@ group 'de.appgewaltig.disk_space'
 version '1.0-SNAPSHOT'
 
 buildscript {
-    ext.kotlin_version = '1.3.72'
+    ext.kotlin_version = '1.9.0'
     repositories {
         google()
         jcenter()