diff --git a/plugins/v1/priority_queue/interface.go b/plugins/v1/priority_queue/interface.go
index d38a0bb..efdc96b 100644
--- a/plugins/v1/priority_queue/interface.go
+++ b/plugins/v1/priority_queue/interface.go
@@ -2,9 +2,11 @@ package priorityqueue
 
 // Queue is a binary heap interface
 type Queue interface {
+	// PeekPriority returns the highest priority
+	PeekPriority() int64
 	// Insert adds an item to the queue
 	Insert(item Item)
-	// ExtractMin returns the item with the lowest priority
+	// ExtractMin returns the item with the highest priority (less value is the highest priority)
 	ExtractMin() Item
 	// Len returns the number of items in the queue
 	Len() uint64