diff --git a/Cargo.toml b/Cargo.toml
index ec1f674..4861700 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 name = "schematics"
 version = "0.1.0"
 authors = ["Adrian Heine <mail@adrianheine.de>"]
-edition = "2018"
+edition = "2021"
 build = "src/build.rs"
 
 [dependencies]