diff --git a/Cargo.toml b/Cargo.toml
index a004aef..36dbd89 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,7 +6,7 @@ description = "Generated bindings for Linux's userspace API"
 documentation = "https://docs.rs/linux-raw-sys"
 license = "Apache-2.0 WITH LLVM-exception OR Apache-2.0 OR MIT"
 repository = "https://github.com/sunfishcode/linux-raw-sys"
-edition = "2018"
+edition = "2021"
 keywords = ["linux", "uapi", "ffi"]
 categories = ["external-ffi-bindings"]
 exclude = ["gen"]