diff --git a/lab2/zad2/app/build.gradle.kts b/lab2/zad2/app/build.gradle.kts
index c5b2546..7ec2e24 100644
--- a/lab2/zad2/app/build.gradle.kts
+++ b/lab2/zad2/app/build.gradle.kts
@@ -32,6 +32,12 @@ java {
     }
 }
 
+tasks.withType<Jar> {
+    manifest {
+        attributes["Main-Class"] = "pl.jacekpoz.Main"
+    }
+}
+
 application {
     // Define the main class for the application.
     mainClass = "pl.jacekpoz.Main"