diff --git a/build.gradle.kts b/build.gradle.kts
index 25048b2..0de3754 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -54,6 +54,8 @@ kotlin {
 
 java {
     targetCompatibility = JavaVersion.VERSION_11
+
+    withSourcesJar()
 }
 
 publishing {