diff --git a/examples/src/bld/java/com/example/ExampleBuild.java b/examples/src/bld/java/com/example/ExampleBuild.java
index 6125210..414e73a 100644
--- a/examples/src/bld/java/com/example/ExampleBuild.java
+++ b/examples/src/bld/java/com/example/ExampleBuild.java
@@ -39,6 +39,8 @@ public class ExampleBuild extends Project {
                 .include(dependency("org.jetbrains.kotlin:kotlin-test-junit5:1.9.20"))
                 .include(dependency("org.junit.jupiter", "junit-jupiter", version(5, 10, 1)))
                 .include(dependency("org.junit.platform", "junit-platform-console-standalone", version(1, 10, 1)));
+
+        jarSourcesOperation().sourceDirectories(new File(srcMainDirectory(), "kotlin"));
     }
 
     public static void main(String[] args) {