diff --git a/java/shared/build.gradle.kts b/java/shared/build.gradle.kts
index ff2bd001..ef84977a 100644
--- a/java/shared/build.gradle.kts
+++ b/java/shared/build.gradle.kts
@@ -30,3 +30,15 @@ publishing {
         }
     }
 }
+
+tasks {
+    val sourcesJar by creating(Jar::class) {
+        dependsOn(JavaPlugin.CLASSES_TASK_NAME)
+        archiveClassifier.set("sources")
+        from(sourceSets["main"].allJava)
+    }
+
+    artifacts {
+        add("archives", sourcesJar)
+    }
+}