diff --git a/jecs.luau b/jecs.luau
index c0b4cf3..f8b3bd6 100644
--- a/jecs.luau
+++ b/jecs.luau
@@ -2196,7 +2196,7 @@ function World.new()
 	return self
 end
 
-export type Entity<T = nil> = number & { __T: T }
+export type Entity<T = unknown> = {__T: T}
 
 export type Id<T = nil> =
     | Entity<T>