diff --git a/Cargo.toml b/Cargo.toml
index 2fe9768..4073b56 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 name = "async-walkdir"
 version = "1.0.0"
 authors = ["Ririsoft <riri@ririsoft.com>"]
-edition = "2018"
+edition = "2021"
 description = "Asynchronous directory traversal for Rust."
 license = "Apache-2.0"
 keywords = ["async", "walk", "directory", "recursive", "stream"]