diff --git a/derive/Cargo.toml b/derive/Cargo.toml
index 27451be..8391cb6 100644
--- a/derive/Cargo.toml
+++ b/derive/Cargo.toml
@@ -2,7 +2,8 @@
 name = "nanoserde-derive"
 version = "0.2.0-beta.2"
 authors = ["Makepad <info@makepad.nl>", "Fedor <not.fl3@gmail.com>"]
-edition = "2018"
+edition = "2021"
+rust-version = "1.71.1"
 description = "Fork of makepad-tinyserde derive without any external dependencies"
 license = "MIT"