diff --git a/Cargo.toml b/Cargo.toml
index ba99943..347c206 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 name = "zero2prod"
 version = "0.1.0"
 authors = ["LukeMathWalker <rust@lpalmieri.com>"]
-edition = "2018"
+edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 [lib]