diff --git a/cargo-miri/Cargo.toml b/cargo-miri/Cargo.toml
index 7789a8a8959..eb926525305 100644
--- a/cargo-miri/Cargo.toml
+++ b/cargo-miri/Cargo.toml
@@ -5,7 +5,7 @@ license = "MIT OR Apache-2.0"
 name = "cargo-miri"
 repository = "https://github.com/rust-lang/miri"
 version = "0.1.0"
-edition = "2018"
+edition = "2021"
 
 [[bin]]
 name = "cargo-miri"