diff --git a/lib/build.gradle b/lib/build.gradle
index 05be852..13d0cc2 100644
--- a/lib/build.gradle
+++ b/lib/build.gradle
@@ -3,7 +3,7 @@ plugins {
     id 'maven-publish'
 
     // for comparator
-    id "org.xtext.xtend" version '3.0.2'
+    id "org.xtext.xtend" version '4.0.0'
 }