diff --git a/Cargo.toml b/Cargo.toml
index b001d49..4775d89 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,7 +7,7 @@ authors = ["Astro <astro@spaceboyz.net>"]
 version = "0.0.0"
 keywords = ["thermostat", "laser", "physics"]
 repository = "https://git.m-labs.hk/M-Labs/thermostat"
-edition = "2018"
+edition = "2021"
 
 [package.metadata.docs.rs]
 features = []