diff --git a/Cargo.toml b/Cargo.toml
index d6823e43131847ca274ac180b1a2f83f93805704..ad22949cba4cd9de8e5f18dd6e14b12960eeb6c6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,7 +9,7 @@ readme = "README.md"
 keywords = ["cryptography", "openpgp", "pgp", "encryption", "signing"]
 categories = ["cryptography", "authentication", "email"]
 license = "GPL-3.0-or-later"
-edition = "2018"
+edition = "2021"
 rust-version = "1.60"
 
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