diff --git a/build.gradle b/build.gradle
index 002b7605..2b8334e3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -70,7 +70,7 @@ jacoco {
 }
 
 task sourceJar(type: Jar) {
-    from sourceSets.main.allJava
+    from sourceSets.main.allSource
 }
 
 jacocoTestReport {