diff --git a/Cargo.toml b/Cargo.toml
index c93e3c2f..1367bdea 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ name = "ethers"
 version = "0.5.3"
 authors = ["Georgios Konstantopoulos <me@gakonst.com>"]
 license = "MIT OR Apache-2.0"
-edition = "2018"
+edition = "2021"
 readme = "README.md"
 documentation = "https://docs.rs/ethers"
 repository = "https://github.com/gakonst/ethers-rs"