diff --git a/schemars/Cargo.toml b/schemars/Cargo.toml
index 850ef13..e02f0e0 100644
--- a/schemars/Cargo.toml
+++ b/schemars/Cargo.toml
@@ -5,7 +5,7 @@ homepage = "https://graham.cool/schemars/"
 repository = "https://github.com/GREsau/schemars"
 version = "0.8.12"
 authors = ["Graham Esau <gesau@hotmail.co.uk>"]
-edition = "2018"
+edition = "2021"
 license = "MIT"
 readme = "README.md"
 keywords = ["rust", "json-schema", "serde"]
diff --git a/schemars_derive/Cargo.toml b/schemars_derive/Cargo.toml
index 42d4fcd..8bb235e 100644
--- a/schemars_derive/Cargo.toml
+++ b/schemars_derive/Cargo.toml
@@ -5,7 +5,7 @@ homepage = "https://graham.cool/schemars/"
 repository = "https://github.com/GREsau/schemars"
 version = "0.8.12"
 authors = ["Graham Esau <gesau@hotmail.co.uk>"]
-edition = "2018"
+edition = "2021"
 license = "MIT"
 readme = "README.md"
 keywords = ["rust", "json-schema", "serde"]