diff --git a/docs/manual/build.gradle b/docs/manual/build.gradle
index e2ff316497..55d3c43bff 100644
--- a/docs/manual/build.gradle
+++ b/docs/manual/build.gradle
@@ -1,4 +1,4 @@
-usePlugin 'docbook'
+apply id: 'docbook'
 
 defaultTasks 'docbookHtml'