diff --git a/book/book.toml b/book/book.toml
index c551876..bbebb08 100644
--- a/book/book.toml
+++ b/book/book.toml
@@ -14,4 +14,4 @@ edit-url-template = "https://github.com/RustForWeb/shield/edit/main/book/{path}"
 git-repository-url = "https://github.com/RustForWeb/shield"
 
 [rust]
-edition = "2021"
+edition = "2024"