diff --git a/build.gradle.kts b/build.gradle.kts
index 98c1368486..e7dad31771 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -75,7 +75,7 @@ dependencies {
 tasks.register<Javadoc>("aggregatedJavadocs") {
   description = "Generate javadocs from all child projects as if they were a single project"
   group = "Documentation"
-  destinationDir = layout.buildDirectory.dir("docs/javadoc").get().asFile
+  setDestinationDir(layout.buildDirectory.dir("docs/javadoc").get().asFile)
   title = "${project.name} $version API"
   (options as StandardJavadocDocletOptions).author(true)
   classpath = aggregatedJavadocClasspath