diff --git a/src/queue/multilevel.rs b/src/queue/multilevel.rs
index 70130c4..910977a 100644
--- a/src/queue/multilevel.rs
+++ b/src/queue/multilevel.rs
@@ -508,6 +508,7 @@ impl Default for Config {
 }
 
 /// The builder of a multilevel task queue.
+#[derive(Clone)]
 pub struct Builder {
     manager: Arc<LevelManager>,
 }