diff --git a/Cargo.toml b/Cargo.toml
index 0a608d2..f3fb751 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,7 +17,7 @@ include = [
     "LICENSE-MIT",
     "LICENSE-APACHE",
 ]
-edition = "2018"
+edition = "2021"
 
 [features]
 default = []