diff --git a/build.gradle b/build.gradle
index d92f8e24..2a00a6aa 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,7 +3,7 @@ plugins {
     // spotless for license headers and linting
     id "com.diffplug.spotless" version "6.8.0" apply false
     // generation of project-wide javadocs
-    id "io.freefair.aggregate-javadoc" version "6.5.0.3"
+    id "io.freefair.aggregate-javadoc" version "6.6.3"
 
     // pom packaging for root
     id "java-platform"