diff --git a/build.gradle b/build.gradle
index 41dbeee..b4dfc9d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -132,7 +132,7 @@ jar {
         configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
     }
 
-    duplicatesStrategy = DuplicatesStrategy.INCLUDE
+    duplicatesStrategy = DuplicatesStrategy.EXCLUDE
 
     from('src/main/java') {
         include '*.xml'