diff --git a/app/build.gradle b/app/build.gradle
index f23589b..092c22f 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -78,6 +78,10 @@ android {
         kotlinCompilerExtensionVersion = "2.2.20"
     }
 
+    kotlin {
+        jvmToolchain(21)
+    }
+
     lint {
         disable 'UsingMaterialAndMaterial3Libraries'
     }