diff --git a/build.gradle.kts b/build.gradle.kts
index 0bde2cdb6..cc5578110 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -9,7 +9,7 @@ plugins {
     id("com.github.gradle-git-version-calculator") version "1.1.0"
     id("io.freefair.lombok") version "6.0.0-m2"
     id("io.freefair.javadoc-links") version "6.0.0-m2"
-    id("io.freefair.javadoc-utf-8") version "6.0.0-m2"
+    id("io.freefair.javadoc-utf-8") version "6.6.3"
     id("org.sonarqube") version "3.3"
 }