diff --git a/sequence.lua b/sequence.lua
index be17f5b..54618cb 100644
--- a/sequence.lua
+++ b/sequence.lua
@@ -46,6 +46,7 @@ for _, v in ipairs({
 	"append",
 	"shallow_overlay",
 	"deep_overlay",
+	"copy",
 	"shallow_copy",
 	"deep_copy",
 }) do