diff --git a/api/src/main/java/net/okocraft/box/api/event/stock/StockEvent.java b/api/src/main/java/net/okocraft/box/api/event/stock/StockEvent.java
index ab20bbb286..1b62eab897 100644
--- a/api/src/main/java/net/okocraft/box/api/event/stock/StockEvent.java
+++ b/api/src/main/java/net/okocraft/box/api/event/stock/StockEvent.java
@@ -10,6 +10,7 @@
  * You need to be very careful not to call methods that cause changes to a {@link StockHolder} in the event,
  * as this may result in an infinite loop.
  */
+// TODO: move StockEvent classes to api.event.stockholder in version 5.0.0
 public class StockEvent extends StockHolderEvent {
 
     /**