diff --git a/jecs.luau b/jecs.luau
index f705f0e..7f47472 100644
--- a/jecs.luau
+++ b/jecs.luau
@@ -2650,10 +2650,10 @@ return {
 	tag = (ECS_TAG :: any) :: <T>() -> Entity<T>,
 	meta = (ECS_META :: any) :: <T>(id: Entity, id: Id<T>, value: T) -> Entity<T>,
 	is_tag = (ecs_is_tag :: any) :: <T>(World, Id<T>) -> boolean,
-
-	OnAdd = EcsOnAdd :: Entity<(entity: Entity) -> ()>,
-	OnRemove = EcsOnRemove :: Entity<(entity: Entity) -> ()>,
-	OnChange = EcsOnChange :: Entity<(entity: Entity, data: any) -> ()>,
+	
+    OnAdd = EcsOnAdd :: Entity<<T>(entity: Entity, id: Id<T>, data: T) -> ()>,
+	OnRemove = EcsOnRemove :: Entity<(entity: Entity, id: Id) -> ()>,
+	OnChange = EcsOnChange :: Entity<<T>(entity: Entity, id: Id<T>, data: T) -> ()>,
 	ChildOf = EcsChildOf :: Entity,
 	Component = EcsComponent :: Entity,
 	Wildcard = EcsWildcard :: Entity,